You're composing a bit of a motte-and-bailey argument here. From your replies downthread, it seems clear that you have issues with the underlying concerns of the protests. But your opening bid for the argument is "politics don't belong in the workplace".
If you were up-front about this, you'd say "harassment and discrimination are political issues that shouldn't be organized around". Of course, that argument wouldn't carry well here. But it'd be more intellectually honest.