Can we fight back? We can wait until we can vote, but do we really expect fascists to play by the rules? Would it be unethical if we tried to get the enemy fighting among themselves? First unite their smaller fractions against the largest fraction? Then do the same with what is left? In their own Internet hideouts? Play their ego's against each other? For example at "X" "Elon is only dragged down by Trump". At "Truth social" the opposite "Elon tries to push Trump out!" etc. Many of their followers are not evil people, they are misled. Don't attack them or try to use facts to convince them as that just doesn't help. Just ask questions like you are ignorant, so at one point they start to see the ugly truth themselves. Some never will though and some are just evil themselves. But many will see it in the end. We let fascism rule once, why again? Stop the evil empire!
The question is not "can we" but "will we".
American pro-gun lobbies have been justifying the staggering number of firearm casualties in the US every year by saying they have their precious 2nd amendment, that constitutes the ultimate protection of the people against tyranny.
Well, this is tyranny: USE IT!
If you don't, you'll prove yourselves to be the mere play warriors you appear to be to everybody else, who talk big but ultimately do nothing.