I can't be fired where I am now, and I'm too unimportant to worry about my safety, but if the fascists ever decide to put my name on a list of employees who are reasons why my employer should be dismantled or brought under fascist control, that would do FAR more damage than any small-dollar donation ever could. If that list was going to be 1,000, it's now 999, and I think that's important.
Campaigns are an inefficient way to do good, anyway.