Mark Zuckerberg vs. Jack Dorsey is the most interesting battle in Silicon Valley

The move came just weeks after Facebook said it would not block false political advertising, arguing that it would violate its mission to promote free speech, even paid free speech.

Dorsey couldn't have been more clear with his announcement Wednesday: If you want to run a massive, open social media platform, you don't need to accept money to amplify a political message, especially false or misleading messages.

Instead, Twitter is over-correcting the problem by nuking political ads from its service until a better solution to keep everything in check presents itself later. People will still be able to post whatever they want on Twitter, but they can't pay Twitter to target and amplify a potentially misleading political message.

Twitter wasn't the first TikTok also said it would ban political advertising earlier this month but as the platform that dominates the much of the political and cultural discussion, the decision carries extra weight.

Zuckerberg on Wednesday left open a tiny window that he may change his mind, saying he'll keep thinking about whether or not to allow political ads.