Vegan

The most effective policies are often not fancy ones. For example, if you want to fix worker exploitation, you do not establish socialism in a couple countries, but you try to improve labor laws in a few most exploited places.

Communism will not happen. But if you want to reduce the amount of exploitation the most, then you want to try to get capitalists to exploit workers a bit less. Not a few people to join a socialist party.

This is not the way to fix anything. It's a temporary band-aid on a problem (industrialized mass murder on a scale which makes all other human atrocities combined seem insignificant), that will only get worse with time if not kept in check.

I agree with you that individual veganism is not the (full) solution. And I even agree with you that reducing meat consumption is a good (albeit small) stepping stone towards the solution (kinda like getting someone left-of-center elected, or divesting from Israel financially). However, the full solution is banning animal agriculture entirely.