The first interracial kiss on TV wasn't even in the US. It was in the UK's Emergency Ward 10 in 1964.
"Nevertheless, although sedate by today's standard the series did set a landmark in 1964 and courted a considerable amount of controversy with its portrayal of an interracial relationship between surgeon Louise Mahler (Joan Hooley) and Doctor Giles Farmer (John White) which included the first ever on-screen interracial kiss."
"Nevertheless, although sedate by today's standard the series did set a landmark in 1964 and courted a considerable amount of controversy with its portrayal of an interracial relationship between surgeon Louise Mahler (Joan Hooley) and Doctor Giles Farmer (John White) which
included the first ever on-screen interracial kiss."
http://www.televisionheaven.co.uk/ward.htm