tributes and arrests as russians remember a fierce critic of the kremlin. the u.s. ambassador today standing in solidarity. plus, presidential pitches. donald trump s message in michigan this weekend. bring our country back from hell. nikki haley insists she is in it to win it. you can t win an election if you re spending more time in court than on the capaign trail. weather threats. in florida, the daytona 500 idled. millions of californians facing a firehose of rain again. the latest forecast. and later, serving up second chances from knife skills to free meals. how this san francisco non-profit is uplifting disadvantaged trainees in the kitchen and beyond. i get to do what life for a passion. i am also helping people. reporter: this is cbs weekend news. with jericka duncan. good evening thauchlt for joining us. tonight flags in minnesota have been lowered to half-staff honoring two philippolice offic paramedic shot and killed today after an hours-long s