According to Del. Emmet Burns, an African-American pastor, the distinction he draws between the Civil Rights movement he participated in and the gay marriage movement he opposes is summed up in his quote "I would not have been able to sit where I now sit as a member of the General Assembly during the days of discrimination based on the color of my skin. Gays and lesbians could because they can 'hide' their sexual orientation more easily."
So what he is saying is, if he could have "passed" back then he wouldn't have given one thought about the Civil Rights movement because he could "hide" his ethnicity more easily. Sounds like typical hypocrisy for someone who purports to preach peace and love.