There is a big difference between: (1) Not associating with someone who you know has done some wrong. (2) Not associating with someone where there are unprove

There is a big difference between: (1) Not associating with someone who you know has done some wrong. (2) Not associating with someone where there are unproven public rumors that they've done some wrong. (3) Not associating with someone who associates with someone who is subject to unproven public rumors of wrong doing. (4) Publicly attacking people over unproven rumors of wrong doing for which you have no personal knowledge. (5) Publicly attacking people because they failed to engage in public attacks against a third person who is subject to unproven allegations which the attacking party (nor the party being attacked) have no personal knowledge. ("If you won't denounce Albert Einstein as a vile traitor here and now then you're a supporter of communism yourself!") -- or the N-th generation version of that ("You meta-meta-meta communist scum!"). (6) Complaining that the people with torches and pitchforks might be acting in a way which undermines the fairness or even viability of a civilized society.