If you don't even know what the Millions More march is then you should read up on it.
If you just don't think that this is an important issue within the gay community then you don't have to. Many gay people didn't before either. Then George Bush was elected, partially due to the significant increase of votes he got from minorities. So if you don't think that gay relations with other non gay groups is important, then go right ahead. Guess what though, you can be sure that other groups are reaching out to them, and chances are that they are the same ones that you don't want to see