I've heard some very convincing arguments against abolishing DADT, mostly from those within the military or closely associated with it. They point out very practical problems with changing an institution that is as much social as it is professional.
What few who make those arguments realize is that outsiders like, let's say for example, Lady Gaga, just see it as a government policy of discrimination.
Now, there's two things opponents of DADT could do to help their argument. The first is to understand why proponents say the military isn't ready for a repeal of DADT, so as to better craft their arguments.
The second is to find Lady Gaga, thank her politely and ask her to stop.

For the record, I think it's great that a prominent figure has stood up for the cause. I just think it was better when Adm. Michael Mullen, chairman of the Joint Chiefs of Staff, told the Senate Armed Services Committee that repealing DADT would be "the right thing to do" earlier this year.
Why? Let's compare their ability to argue the point. Adm Mullen, you're up first;
"I cannot escape being troubled by the fact that we have in place a policy which forces young men and women to lie about who they are in order to defend their fellow citizens."
An excellent point. Now Ms. Gaga, looking fetching in a dress made of meat at the recent VMA awards. Why did you wear a meat dress?
"If we don't stand up for what we believe in, if we don't fight for our rights, pretty soon we're going to have as much rights as the meat on our bones."
Ladies and gentlemen, I think we have a winner.
While Gaga is more flashy and is bound to get more attention, she's really doing more harm than good. Any change in the attitude toward DADT is going to have to come from inside the military, and while Adm. Mullen makes a reasoned and reasonable argument, Lady Gaga's simplistic and confusing arguments will only inspire resentment, not compromise.
No matter what you believe, I think we can all agree that Lady Gaga should keep to her areas of expertise, especially if she really does care about the cause she's fighting for.