Hard disagree. Randomly murdering fascists does not a revolution make, to say nothing of the odds of winning that fight.

Go to the gym. Be able to do cardio without dying. Work on your fitness and health. Then buy a gun. Train with it. A lot. Organize with like-minded people. Invest in community defense, look out for LGBT / immigrant / marginalized friends and family. Be prepared for violence, but keep it a last resort. When / if bullets start flying, lives with be ruined on both sides of the gun.