I'm going to argue that those feelings of anger are self-destructive and don't lead to effective activism or positive change in the world. Emotions are contagious
People can post all the politics they like and some of it is going to get in my feed but there are a lot of people who post 20 angry things about Trump a day and nothing good is going to come out of following people like that. I am interested in activism on the issues of: (1) Gen Z's social disconnectedness, (2) an "othering" style of activism on the left that helps the right win, (3) subverting the "trauma theory" that encourages people to build identities around marginalization (e.g. "diss abled" people), (4) recognition of the common (5-10%) condition of schizotypy which is now misdiagnosed as ADHD, autism and other fashionable conditions, and (5) getting our economy and technology aligned with our environment.
Getting mad doesn't help with any of these.