That attitude that fighting is probably not fair, but you have to defend yourself anyway and damage the enemy, has been profoundly consequential as far as my political activism goes.
There's enormous progressive activism and, more often than not, success at the grassroots level - everything from living wage campaigns to efforts to finance our elections are having terrific success.
But as for activism, my parents did what they could, given the constraints, but were never involved in the causes I think of when I think of activists.