Its mixed.
Kid was a Republican from a rural area of the country (that is often Republican). Kid was also wearing pro-gun T-shirt and also wielding AR-15.
There's also $15 to a progressive (aka: left) cause in this kid's name. So its not all right-wing stuff. But the myth of "kind" rural people who are responsible with their AR-15 long-range rifles is clearly going to be demolished by this turn of events. (In case Uvalde Texas didn't prove that yet....)