R.I.P. Muhammad Ali. This provides a good summary of why we should honor him. His fight for a draft deferral went to the Supreme Court (and was the subject of a HBO film). The backstory includes Justice Harlan at the last minute examining the facts and throwing the case his way. The Trump/Mexican thing is germane including why yes it's "racism." Comments there cover the gambit, including how word trolls aren't convincing.