Making it loud and clear. Also, you don't need to have a alt-right haircut to be complicit (although it does make you quite identifiable!) White denial is real as hell and has been rearing its ugly head in so many online discussions. Instead of trying to prove that you are a "good white person" because you x, y, and z, do real work to figure out why you feel the need to justify your whiteness, why it is so fragile, and what you can do to work together with others to tear down this structure. This is the time to be listening to POC and taking their direction. Talk to your racist relatives! Do the work!