Actor Morgan Freeman is stumping for Hillary Clinton in a second television ad that portrays her standing up for the rights of African Americans.

Freeman kicks off the 30-second spot by naming several black victims of violence that is alleged to be racially motivated, including Trayvon Martin, Dontre Hamilton and Sandra Bland. Martin, a teenager, was followed and then killed by a Latino security guard, while Hamilton was shot by a white police officer. Bland, who hanged herself in a jail cell, was allegedly subject to racial violence by authorities.

Clinton "makes their mothers' fight for justice her own," Freeman says in the ad.

He also says Clinton is sticking up for the victims of lead-contaminated water in Flint, Michigan. Clinton "stands with the president against those who would undo his achievements, just like she's always stood with us," Freeman concludes.

The ad began running over the weekend in South Carolina, which will hold its Democratic presidential primary on Saturday.

The Clinton campaign also announced that five mothers who lost their children to gun violence or while in police custody will travel to 10 South Carolina cities on Monday to host forums on behalf of Clinton's candidacy.