What Caused The 2020 Homicide Spike?

A tight empirical case that the 2020 US homicide spike was driven by the George Floyd/BLM protests and subsequent police pullback, not the pandemic. Five converging lines: timing (the spike begins late May with Floyd, not mid-March with the shutdown — confirmed across CCJ, FT, and assault data); a documented police pullback (Chicago arrests, Minneapolis traffic stops collapse after the protests); victims overwhelmingly Black (consistent with police withdrawing from Black communities, not with race-neutral 'cabin fever'); the 2014-15 Ferguson Effect precedent (St. Louis/Baltimore spikes); and the decisive cross-country comparison — the pandemic was global but only the US spiked (UK, Germany, Denmark, and Central American countries all flat or down). Closes with a 'moment of griping' that mainstream outlets keep concluding 'a complex stew of factors, probably the pandemic' and won't update.

Quality 75 · Excellent. Low-Excellent. A model of careful, fair empirical reasoning on a politically charged question: multiple independent lines converge, counter-evidence (the Intercept chart, the skeptical Ferguson study) is handled honestly, and the cross-country argument is close to decisive. Held just into the Excellent band rather than higher by its narrow scope (one spike, one cause) and its partial role as a media-criticism vehicle. 75.

Claude’s paradigm shift 42 · Moderate. Moderate. The police-pullback / Ferguson-Effect hypothesis pre-existed; Scott marshals strong evidence for it rather than introducing a new frame. 42.

Real-world impact 2 · Minor. A model of careful, fair empirical reasoning attributing the 2020 homicide spike to the Floyd-protest police pullback rather than the pandemic (five converging lines). Real topical relevance to a materially-consequential question (homicide/policing), but a focused attribution argument informing the debate with no enacted change — low RWI.