President Obama has tried his best to address the ongoing clash between police and the black community over killings of black men, but more work needs to be done at the local level to build trust between law enforcement and communities around the country, the White House said Thursday.

After being asked about the shooting of Keith Lamont Scott in North Carolina, which has sparked protests in the state, White House press secretary Josh Earnest said the president “has unfortunately had numerous opportunities to address this topic.”