What was the MAIN focus of African American activists in 1964?

The activists focused upon registering African-Americans to vote. Of course, all of the demonstrations were also aimed at the passage of the Civil Rights Act that prohibited racial discrimination.

http://www.jstor.org/discover/10.2307/2587588?uid=3739256&uid=2129&uid=2&uid=70&uid=4&sid=21101867198123

http://en.wikipedia.org/wiki/African-American_Civil_Rights_Movement_(1955%E2%80%9368)#Mississippi_Freedom_Summer.2C_1964

http://crime.about.com/od/history/p/ms_burn.htm