put a pole with a spiked ball on a chain out behind your vehicle and go street sweeping.

and most standing things can be torn down simple enough from the ground by eroding the base.
take out the pillars

get a emp proof hand drill and drill holes or find ways to puncture the riot vheicles, try to soften their armor with chemical combos

copper eats aluminum etc.
acid eats steel

poison needles in their eyes, war paint for their faces, glue, ropes chains confetti

fishhooks