The Civil Rights Act of 1968 is a little different from the Civil Rights Act of 1964. In legal circles, it is commonly known as the Fair Housing Act. In essence, what the '68 Act did was to make it illegal to discriminate in housing decisions based on race, religion, national origin, etc. This all stemmed from generations of a practice called "redlining" wherein agents wouldn't show people of color housing in particular areas. The '68 Act has been widely used to bring attention to the problem of housing discrimination but has not solved the problem. Housing discrimination remains a problem throughout the United States.
The '68 Act also makes it a federal crime to hurt or intimidate anyone based on their race, color, religion, etc. This is the origin of many hate crime bills.