I notice that no-one in the picture is positioned in such a way to see what's on the phone sooo... it's not really the same thing as a someone flying a nazi flag in a crowd of MAGAts.
If it were some idiot at a right-wing rally holding a swastika, you would very hypocritically not be inclined to give the guy the benefit of the doubt, you be like "THIS IS PROOF ALL CONSERVATIVES ARE NAZIS REEEE!"
"One person whatever doesn't speak for all"? You say that about swastika holder at a pro-palestine rally but you wouldn't be the same towards someone at a some right-wing rally.