It's a fact of life - sometimes, politicians get booed. It may be because their audience disagrees with them, or because of partisan leanings, or sometimes just because they threw a bad pitch. Take a look at the top booings in recent history:

Mitt Romney got a less than warm welcome when he spoke at the NAACP Convention today, receiving boos from the crowd after saying that he would repeal Obamacare immediately if elected.

President Obama got needled by Boston fans at a fundraiser last month when he thanked the crowd for the gift of former Red Sox first baseman Kevin Youkilis on behalf of his own team, the Chicago White Sox. While some say Obama was booed by the crowd, others say he was "Youked," a reference to fans' cheer for Youkilis.

Want more off-the-cuff politics? Check out OTUS on Facebook and follow us on Twitter @OTUSNews.

Michelle Obama and Dr. Jill Biden were the recipients of a round of boos by NASCAR fans when the pair served as grand marshal for the NASCAR season finale in Florida last November. Staffers for the first lady claimed that there was no audible booing at the event.

During a GOP debate in September, an openly gay soldier directing a question about Don't Ask Don't Tell to Rick Santorum was unmistakably booed by the crowd. Later on in the same debate, a question asking about "dying people" that would be helped by Obama's health care plan was also booed.

One week earlier, then presidential candidate Ron Paul was booed at a CNN/Tea Party debate amidst his explanation of what he believed to be the causes of the 2001 terrorist attacks.

In Sept. 2010, former VP candidate and Alaska governor Sarah Palin was reportedly booed on "Dancing with the Stars," where she appeared to support her daughter Bristol, who was competing. It has since been debated whether the boos were actually directed at Palin herself.

Then newly elected President George W. Bush got a dubious response when he tossed the first pitch of the season in the Nationals' stadium in March 2008. President Obama later took the mixed response to Bush's pitch as a cautionary tale, saying he'd practiced extensively before his first pitch in order to avoid the same result.

Get more pure politics at ABC News.com/Politics and a lighter take on the news at OTUSNews.com