Which statements about the events in Selma are true? Choose all answers that are correct.

President Johnson refused to support the march for fear of losing political support in the South.

More than twenty thousand people joined the final, successful Selma to Montgomery march to show they supported the civil rights movement.

Many Americans were sickened by what they saw on television.

The first time marchers tried to cross the bridge, they were attacked and beaten by state troopers.