Democratic candidates are continuing their push in South Carolina at the state party convention and Planned Parenthood forum. According to the latest CBS News battleground tracker, Joe Biden is the top choice among South Carolina Democrats. The Democratic Presidential debates are this Wednesday and Thursday with room for just 10 of the two dozen candidates each night. Source

Sacramento police have released body-cam video of a deadly police shooting showing officers coming under heavy gunfire. Officials say police were responding to a domestic call when police say they were ambushed. It took police 45 minutes to get 26-year-old rookie officer Tara O’Sullivan to the hospital, where she died. Fellow officers saluted her casket as her body was taken to a funeral home on Saturday. Her alleged killer is due in court Monday. Source

11 people are believed dead in Hawaii after the twin-engine plane they were aboard crashed. It is the deadliest civilian plane crash in the last four years. The plane has just taken off near Oahu’s North Shore when it fell out of the sky. Carter Evans reports. Source

In Colorado, a summer storm brought nearly 2 feet of snow to some areas. And on Friday severe storms ripped off roofs and downed power lines in parts of Tennessee. The strong storms are being blamed for the deaths for at least three people. More rough weather is expected in parts of the country. Meteorologist Jeff Berardelli reports. Source

Here’s a look at the top stories making headlines on the “CBS Weekend News.” Source

The department has faced criticism because it took 45 minutes to transport rookie Officer Tara O’Sullivan​ to a hospital Source

The protests come only days after European Union leaders disagreed on a plan to strive for a climate-neutral economy by 2050 Source

South Carolina is considered a proving ground ahead of a Super Tuesday slate that includes other similar Southern states and hundreds of delegates at stake Source

More than 60 horses have died at Santa Anita Park since the beginning of 2018 Source

NASA’s Mars 2020 mission, which launches for the Red Planet next summer, will feature not just a rover, but also a tiny helicopter that will detach and hover above the Martian surface. David Pogue talked with Mimi Aung, project manager at NASA’s Jet Propulsion Laboratory in Pasadena, in this preview of Pogue’s report for “Sunday Morning” June 23. Source