https://twitter.com/jack/status/1189634360472829952?ref_src=...
In practice, this leads to weird scenarios where Exxon can run promotional ads but climate groups can't run ads in opposition.
I'm not saying this is the wrong policy necessarily, just that "politics" is a tricky thing to define. Labor unions can't run ads saying workers should demand more pay, but Amazon can run ads saying their jobs pay good wages.
Edit: Also, I tried to find the original post but the blog is down, at least for the moment for me. https://blog.twitter.com -- anyway, here's a cached version: https://webcache.googleusercontent.com/search?q=cache:ADXc6W...