My uncle, whom i work with, refuses to speak to me or even be in the same room as me all just because I was reading the glr classic book "White Power". I guess he got triggered by the title and swastikas on the cover. Fucking ridiculous, how you gonna stay mad at someone for reading a book ?
A lot of people forget that family isn't just some loose connection by name. We're supposed to help each other. Love isn't just a word. It's supposed to be codified in actions. Help your family. The more you help them, the more they rely on you and value your opinion, and if they require correction, the more weight your words will carry in contrast to the lies they were fed.
But, not everyone can be convinced, even dear family. Ultimately, it's not our job to convince everyone of all truth. At some point, all we can do is tell them the truth, and if someone rejects it, it's upon them. If we truly love someone, we'll work at convincing them, but we shouldn't let such an endeavor drown us. Some people can be convinced quickly, and some it will take a long time. How much effort to expend upon someone to help them, is purely a judgment call that each person must make.