We can’t just pass a few laws and hope the problem will go away. Because it won’t, and then the temptation for governments is to keep passing ever more restrictive laws.
In the context of antisemitism specifically the zero tolerance policy can lend credence to outrageous claims about a powerful Jewish conspiracy lording over society. That is exactly how the Nazis manipulated it during the Weimar period (1918-33).
What we should fear most, yet can never predict, is a ‘radical loser’s’ chance encounter with themselves, in a song, in a book, in a film.
We may not yet quite be at the UK experience of ‘the university scam’ and the way too many students are conned into believing any degree (‘C’s get degrees’…), funded by deeply problematic student loans will provide them options it clearly will not, but in many ways we are not far off.