They are politically motivated. For example, I’ve been banned from Twitter for defending Kyle Rittenhouse, who engaged in lawful self defense against a number of violent assailants. Why? Because the left has decided it serves their interests to paint him as a mass murderer (indeed Facebook has an official policy that he is a mass murderer).
Facebook also regularly censors viral pro-trump content and project veritas has exposed this.
I wish it weren’t so, but it is. I’ve experienced it firsthand.