What happened to racism after slavery?

For the most part racism remained the same or as some historians will note, they believed it increased. In the North, as an example, most people there did not like slavery. When slavery was ended some people in the North, expressed more racism as now more freed Blacks had migrated to the North. All types of ways to keep freed slaves below the social and political level of whites were used to deny Blacks jobs and the right to vote.