I wish I knew how to make browser extensions because I have an idea for one...
When a site is involved in some form of strike, such as the reddit moderator strike (not sure if its technically a strike, but this isn't about semantics), visiting the site pops a message saying so, and offers to block the site from loading till its over.
Why? I'm in favor of many things, but I am also forgetful as fuck. I'd go ahead and let it block reddit.
Include boycotts, and we got Amazon and Facebook in there.