Bring out the popcorn! Democratic Party officials instruct others to pacify the Black Lives Matter activists, without making concrete promises and measures, and that e-mail memo was leaked by Guccifer, a known hacker.

The Nov. 9 memo by former Democratic Congressional Campaign Committee staffer Troy Perry advised candidates and campaign staff to walk a fine line by refusing to endorse “concrete policy positions” while agreeing to meet with small numbers of activists.

Mr. Perry, who now works for the Hillary Clinton presidential campaign, also urged candidates to avoid phrases like “all lives matter” and “black-on-black crime.”

“This response will garner additional media scrutiny and only anger BLM activists,” Mr. Perry said.

Black Lives Matter responded Wednesday with a statement decrying the memo and accusing Democrats of trying to mollify activists without taking them seriously.

“We are disappointed at the DCCC’s placating response to our demand to value all Black life,” said the statement. “Black communities deserve to be heard, not handled.”

DeRay Mckesson, a BLM leader and Baltimore City Public Schools official, said on Twitter that the memo “highlights a serious lack of attention to issues related to black people. Has their view changed since 2015?”