It's not the trolley problem. There are plenty of avenues for political activism /outside/ the workplace. Adults should be capable of not conflating the workplace with their entire existence. The only acceptable activism is unionization, understood as narrowly focused on workplace issues.
For a sample size of one, while I am very guilty of having many politically charged conversations with coworkers, I have always kept them physically /outside/ the workplace. At work we confine conversations strictly about business and customers.