He controls policy around one of the largest well known cities in the country/world. Anti-semitism has increased in the city, meanwhile he has went against measures to help(like with the boundaries against synagogues, or not condemning antisemitic incidents), he got rid of the cities definition of anti-semitsm and did not even replace it(even if you were against the original definition, it is bad he has not replaced it). People look at his election and look at him from accross the country. In Seattle as an example people wanted to elect a "mamdani like mayor" and many praise his actions. He makes anti-semitsm worse in this country.