You mean the fellow with the rifle and scope who'd just murdered one spectator while wounding another and had just nicked the president and was on the roof getting ready to shoot again?
I guess the generally nation-hating Left would have waited until he fired another couple more times before taking him out . . . oh wait the security detail handed to Trump by the Biden Administration damn near did do just exactly that until the counter-sniper -- not let in on the leftist plan -- took it upon himself to end the threat.