@Archnemysis thanks for the info. Yes "here" being Mastodon.
I have set up my filters for "Trump" and "Biden" but I still get a heap of toxic USA political content in my /explore page. I tried making one filter per word and that didn't work either. I'll do a bit more investigation.
Edit: I still see posts with those keywords.
Edit 2: It's a known bug: https://github.com/mastodon/mastodon/issues/21083