It's supposed to be a relatively slow weekend on the campaign front, with both nominees devoting most of their days to prepping for the first presidential debate on Monday.

But so long as Donald Trump is tweeting, it's never truly quiet. On Saturday, he took this shot at Dallas Mavericks owner Mark Cuban: 

Trump appears to be responding to Cuban's announcement earlier this week that the "Shark Tank" star scored prime seats to watch Monday's debate in person.

Donald Trump had nothing to say at his rally Saturday about the recent police shootings of black men that have mobilized civil rights activists across the country -- but he did talk talk about what he sees as the "new civil rights issue of our time." 

In Trump's view, it is school choice. 

"Too many African Americans have been left behind and trapped in poverty," Trump said in Roanoke, Va., stressing that he, not Democratic nominee Hillary Clinton, will foster better schools and create more jobs for African Americans. 

Democrats be warned: Don't take the support of Latinos for granted. 

It's a message, to the surprise of some, coming from Latino elected officials upset over the party's outreach to that crucial voting bloc in races up and down the ballot. 

"I am disappointed to this day with the Democratic Party, with the Democratic Congressional Campaign Committee, the Democratic National Committee, and I would like to see Hillary Clinton’s campaign hire more consultants who are of the communities," Rep. Tony Cárdenas (D-Los Angeles) chairman of the Congressional Hispanic Caucus' fundraising arm, Bold PAC, told The Hill this week. 

If NBC News anchor Lester Holt is nervous about moderating the first presidential debate, he wasn’t showing it earlier this week as he rocked his electric bass on the rooftop lounge overlooking the Hudson River.

Playing with a rock band made up of cohorts from the network’s news magazine show “Dateline,” Holt ably soloed on the Alabama Shakes song “Always Alright” in front of a throng of cheering colleagues. It was a break from his intensive preparation for Monday’s showdown between Hillary Clinton and her Republican opponent, Donald Trump.

Holt’s homework sessions kept him away from his anchor duties on “NBC Nightly News” in the days before the live telecast from Hofstra University in Hempstead, N.Y. Airing across the major broadcast networks, Spanish-language channels and cable services, the anticipated match-up is expected to top the previous debate audience record of 80.6 million TV viewers set in 1980 for the single meeting between Ronald Reagan and Jimmy Carter.