I agree with you that we will need to take back all of these symbols.  But what they mean to us and what they mean to Satanists are two different things.  And the fact remains that this is how they identify themselves to each other, so Q is correct when he/they say "Symbolism will be their downfall" because now that we know what the different symbols and words mean for THEM, we can identify them as well.  Another thing we're going to need to take back is "pizza"!  They will pay for their theft of things we love--art, music, movies, pizza, symbols, liberty, truth, justice, and MOST IMPORTANTLY children.