What's really funny is if you look at polls of African Americans they do not support same sex marriage. It would have been interesting to see that guy have a similar question of Obama at a Town Hall filled with blacks.
L.A. Times Poll: African-Americans remain mostly opposed to gay marriage
http://www.metroweekly.com/news/last_word/2009/06/la-times-poll-african-american.html
...African American voters were almost the opposite, with 54% opposing same-sex unions and 37% supporting them. ...
Gay Marriage Gains More Acceptance
http://pewresearch.org/pubs/1755/poll-gay-marriage-gains-acceptance-gays-in-the-military
...By contrast, blacks continue to oppose same-sex marriage by a wide margin. In 2010, just 30% of non-Hispanic blacks favor gay marriage while 59% are opposed. From 2008 to 2009, 28% of blacks favored same-sex marriage and 62% were opposed...
Will Obama's pro-gay policies alienate African-Americans?
http://www.thegrio.com/politics/will-obamas-pro-gay-policies-alienate-african-americans.php
...However, Obama's move has brought mostly silence from blacks and civil rights groups. That's because repeal of DADT has not and never has been a priority issue for most blacks. But the bigger question is not whether blacks shrug their shoulders at Obama's aggressive support of broader gay rights issues, but whether it will do anything to dampen his support among blacks during the epic re-election battle that he will face in 2012.
There are two reasons this is a worry. Blacks have been by far the most vigorous proponents of the assorted defense of the family initiatives that have been plopped on various state ballots. This has always been the code words for anti-gay marriage opposition. The Pew Research Center for the People & the Press and the Pew Forum on Religion & Public Life in polls in 2009 and 2010 found that blacks opposed same sex marriage by gaping margins over whites or Hispanics. ...
Makes you wonder... And to be honest, the folks "booing" at the event were a handful. They were wrong to boo - but the talking points folks are way overplaying the significance of the few boos heard.
If you can’t model the past, where you know the answer pretty well, how can you model the future? - William Happer Cyrus Fogg Brackett Professor of Physics Princeton University