Red Summer (1919) was a wave of white-on-Black race riots and lynchings across U.S. cities like Chicago and Washington, D.C., driven by post-World War I job and housing competition, the Great Migration, and backlash against returning Black veterans who demanded equal treatment.
Red Summer is the name for the months of intense racial violence that swept the United States in the summer and early fall of 1919. White mobs attacked African American communities in dozens of cities, including Chicago and Washington, D.C., and lynchings spiked nationwide. The violence wasn't random. It grew directly out of the Great Migration, which had brought hundreds of thousands of Black Southerners into Northern cities during World War I, and out of the chaos of demobilization, when millions of soldiers came home and competed for the same jobs and housing.
What made 1919 different from earlier racial violence is that Black communities fought back. Black veterans who had served in WWI returned expecting the democracy they fought for abroad, and many armed themselves and defended their neighborhoods during the riots. The NAACP grew rapidly in this period and pushed hard for federal anti-lynching legislation. So Red Summer is both a story of brutal white backlash and a story of new Black assertiveness, which helps explain the militancy of the 1920s 'New Negro' movement and the Harlem Renaissance that followed.
Red Summer lives in APUSH Unit 7 (1890-1945), right at the seam between the World War I topics and the 1920s. The CED asks you to explain the causes and effects of the Great Migration and the social tensions of the postwar period, and Red Summer is the sharpest single piece of evidence for both. It shows that the Great Migration didn't just move people, it triggered violent competition over jobs, housing, and neighborhood boundaries in Northern cities. It also pairs with the broader 1919 mood of paranoia and unrest (strikes, bombings, the First Red Scare) to show a country lashing out at anyone seen as a threat to the prewar order. For the Migration and Identity themes, it's a go-to example of how migration reshapes both the migrants and the receiving society.
Keep studying APUSH Unit 7
Great Migration (Unit 7)
Red Summer is the violent backlash to the Great Migration. As Black Southerners filled Northern factory jobs and crowded neighborhoods during WWI, white residents responded with mob violence once the war ended and competition tightened. If an exam question asks for an effect of the Great Migration, Red Summer is concrete evidence.
First Red Scare (Unit 7)
Both happened in 1919 and fed the same fear that America was coming apart. White Americans often blamed Black resistance during the riots on radical or Bolshevik influence, which let the government dismiss legitimate grievances as subversion. Same anxious postwar moment, two different scapegoats.
NAACP and Anti-Lynching Activism (Unit 7)
Red Summer supercharged the NAACP. Membership surged, and the organization used the violence to push for federal anti-lynching laws and to publicize racial terror nationally. This is the institutional side of the 'fighting back' story.
Harlem Renaissance and the 'New Negro' (Unit 7)
The defiance Black communities showed in 1919 carried into the 1920s. Claude McKay's poem 'If We Must Die' was written in direct response to Red Summer, and that spirit of self-assertion runs straight through the Harlem Renaissance.
Red Summer usually shows up as supporting evidence rather than as the question itself. Multiple-choice stems might give you an excerpt from a 1919 newspaper, a Claude McKay poem, or NAACP anti-lynching material and ask you to identify the context (postwar tensions, the Great Migration) or the effect (Black political mobilization). No released FRQ has used the term verbatim, but it's strong specific evidence for prompts on the effects of the Great Migration, postwar social tensions, or continuity and change in African American resistance from Reconstruction through the Civil Rights Movement. The move you need to make is connecting it both backward (to wartime migration) and forward (to 1920s Black activism), not just describing the riots.
Easy mix-up because both happened in 1919 and both have 'Red' in the name, but the 'red' means different things. The First Red Scare was a panic over communists and radicals, with the Palmer Raids targeting suspected subversives. Red Summer was racial violence, and the 'red' refers to blood. They're connected, though. The same postwar anxiety drove both, and officials sometimes blamed Black self-defense during the riots on radical agitators, blending the two panics together.
Red Summer was a wave of white mob attacks on Black communities in dozens of U.S. cities during the summer and fall of 1919, including major riots in Chicago and Washington, D.C.
Its main causes were the Great Migration, postwar competition for jobs and housing, and white backlash against Black veterans returning from World War I.
Unlike earlier racial violence, Black communities in 1919 often armed themselves and fought back, marking a turning point toward open resistance.
Red Summer fueled NAACP growth and anti-lynching campaigns, and it shaped the militant 'New Negro' spirit of the 1920s and the Harlem Renaissance.
Don't confuse it with the First Red Scare; that was an anti-communist panic in the same year, while Red Summer was racial violence (the 'red' refers to bloodshed).
On the exam, use Red Summer as specific evidence for effects of the Great Migration or for postwar social tensions in Unit 7.
Red Summer was the series of race riots and lynchings that hit U.S. cities in the summer and early fall of 1919, when white mobs attacked African American communities in places like Chicago and Washington, D.C. It was driven by the Great Migration and post-WWI competition for jobs and housing.
No. The First Red Scare was a 1919-1920 panic over communists and radicals, ending in the Palmer Raids. Red Summer was racial violence against Black Americans in the same year, and the 'red' refers to blood, not communism. They overlapped because officials sometimes blamed Black resistance on radical influence.
Three forces collided. The Great Migration had moved hundreds of thousands of Black Southerners into Northern cities, WWI demobilization sent millions of soldiers home to compete for jobs and housing, and white Americans reacted violently to Black veterans who returned expecting equal treatment.
Yes, and that's a big part of why it matters. Black veterans and residents armed themselves and defended their neighborhoods, especially in Chicago and Washington, D.C. That defiance fueled NAACP growth, anti-lynching campaigns, and the 'New Negro' militancy of the 1920s.
It can appear as evidence in Unit 7 questions about the Great Migration, postwar tensions, or African American activism, often through sources like a 1919 newspaper excerpt or Claude McKay's poetry. You're more likely to use it as supporting evidence in an essay than to see it as the main subject of a question.