The most closely watched news out of the Supreme Court on Thursday was the argument in Trump v. CASA, a case asking whether President Donald Trump has power to cancel many Americans’ citizenship. The justices appeared skeptical that Trump’s executive order on birthright citizenship is constitutional, but may hand him a temporary victory on a procedural question about whether a single trial judge may block his order nationwide.

Just minutes before that hearing began, however, the Court also handed down an important — and unanimous — decision rebuking a federal appeals court’s bizarre approach to police violence cases. That case is known as Barnes v. Felix.

Barnes arose out of what began as a routine traffic stop over “toll violations.” Shortly after Officer Roberto Felix Jr. stopped driver Ashtian Barnes in Houston, Barnes started to drive away while the officer was still standing next to his vehicle. Felix decided to jump onto the moving car, with his feet resting on its doorsill and his head over the car’s roof.

After twice shouting, “don’t fucking move” while clinging to Barnes’s car, Felix fired two shots, killing Barnes.

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