2ND UPDATE, 7:29 PM: “Grade school” tactic is how Ben Carson describes the NBC SNL promo in which Donald Trump calls Carson “a complete and total loser.”

Republican Candidates Take Part In Debates At Reagan Library In Simi Valley“I discovered, when I was in grade school, that those tactics really are for grade school. And I’ve gone far beyond that now,”  Carson said, when asked to comment on the promo NBC News correspondent Peter Alexander said the network posted “accidentally.”

UPDATED, 4:21 PM: NBC News national correspondent Peter Alexander tweeted the Donald Trump SNL promo YouTube link that got posted accidentally included three promos that were “not for air,” including the one in which Trump calls Ben Carson “a complete and total loser.”

We’ve reached out to NBC for comment. No response so far. Meanwhile, Donald Trump tweeted the promos were shot last night:

PREVIOUSLY: NBC responded to Hispanic groups and notables headed to 30 Rock for today’s rally protesting Donald Trump’s upcoming hosting duties on Saturday Night Live – by releasing promos for this weekend’s SNL hosted by the controversial GOP candidate before the rally even began.

About 50 prominent Hispanic figures were set to attend this evening’s SNL Dump Trump Rally to present SNL EP Lorne Michaels with nearly half a million signatures on a petition asking them to dis-invite Trump.

Too late!

NBC already had posted a reel of promos, each featuring Trump and Cecily Strong, touting his guest-hosting gig. A couple of the spots poke fun at FCC’s equal-time regs, explaining the presidential candidate must limit his speaking time to under 4 seconds. “So let me just say this: Ben Carson is a complete and total loser,” Trump says in one.

The promos also serve as NBC’s answer to the Congressional Hispanic Caucus, which on Monday weighed in with an official resolution calling on NBC to dump Trump from this weekend’s broadcast. It went like this: “Be it resolved that the Congressional Hispanic Caucus calls upon NBCUniversal, Broadway Video, and SNL Executive Producer Lorne Michaels to disinvite Mr. Trump from hosting Saturday Night Live because racism is not funny.”

The next day, Trump happily answered questions about today’s planned rally by explaining, as he has done in the past, that protests are great for ratings.

NBC announced in October that Trump, who by then was the GOP frontrunner, would host SNL this weekend. He’d previously hosted the late-night franchise in 2004. Democratic frontrunner Hillary Clinton made an extended appearance on SNL’s season opener, but did not host that night.