Protesters blocked a highway in St. Paul after a jury acquitted Yanez of manslaughter for shooting dead Castile during a July 2016 traffic stop.
Biden has become a liaison between the White House and police.
Three officers are dead and three wounded, with one in critical condition, as investigation continues.
Trump demands 'law and order' while police union rails against open carry of firearms expected at the convention.
One shooting suspect is dead, and the East Baton Rouge Sheriff's Office believes two are at large.
After recent shootings, members of the modern dance company came together to dance to Beyoncé's hit song.
"Racism is alive and kicking," says Oscar-nominated star Latifah.
Former Baltimore mayoral candidate was among demonstrators arrested during Alton Sterling-inspired protest.
"Whenever those of us who are concerned about failures of the criminal justice system attack police, you are doing a disservice to the cause," president says in Spain.
The cop wrote, "Yeah. I would have done 5," apparently referring to the number of times Philando Castile was shot.
"Fear is not an excuse. Hate will not win."
Drake has published an open letter to protest the deaths.
Alton Sterling was shot by two white police officers.