Is There a Mass Shooting by an NRA Member?

i got criticised for saying something was a thought experiment whenit didn't fit some out of s scientific rigour. But i've said this before, and i don't mean it exactly as a joke. I heard that there's never been a mass shooting done by an n r a member. Is that true? Number two, have there been any mash shootings by women? Yes or no. Somebody says, yes, but it's rare. Is rare. Now here's the interesting one. How many of the math shootings were, let's ay, left leaning? Would if registered, democrat, verses right leaning, and if they had registered it would have been republican. What would you say