Well, there are all the people who point out that Twitter will take ages to respond to a report of a conservative-leaning account making threats and will usually end up saying "that doesn't violate our guidelines". But somehow quickly suspends left-leaning accounts which say similar things. Especially if you say them in the direction of a blue-checkmark conservative-leaning account.

Google is supposedly a "common carrier". Though I'm not sure how they're hanging onto that legal title.