apparent parent
Only one person shot two elected representatives, and AFAIK, his pronouns are not "they". There is zero evidence that he is part of some larger plan, and I have seen zero evidence of anyone cheering on his heinous acts (unlike with a recent left-wing murderer, who was lauded as upstanding and handsome).
I watched large portions of the right wing immediately denounce the killings as a left-wing assassination. I don't think any of these people truly believed that left-wing assassins conducted a targeted execution of two Democrats in a tightly-divided R/D state legislature: I think it was a very deliberate effort to confuse the news reporting and minimize the damage of their divisive rhetoric, until something else (a war) pushed it out of the spotlight.