Where do you draw the line between the jerk and his freedom of speech and the brilliant genius spouting unpopular, ahead of their time, ideas. How do you make t

Where do you draw the line between the jerk and his freedom of speech and the brilliant genius spouting unpopular, ahead of their time, ideas. How do you make the difference? If we accept that we can’t, shall we treat them all as jerks and deman a clean, PC world or shall we accept anything at all in the name of protecting freedom of speech?