According to the the National Transgender Advocacy's blog:

The National Transgender Advocacy Coalition (NTAC) is issuing a call to join numerous individuals and members of other organizations in protesting the lavish October 6th annual HRC National Dinner in Washington, DC. Representative Nancy Pelosi, Speaker of the House, will be featured as Keynote at the event.

We are very disappointed and angry that any civil rights organization claiming to advocate for our rights can turn their backs on us when the going gets tough. It amounts to a betrayal, since HRC earlier promised to support only an inclusive ENDA.

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Board Chair Ethan St Pierre said:

But this protest isn't meant to be a raucous affair. This isn't about civil disobedience, it's meant as a show of unity in the face of inequality.

NTAC Media Director ,Vanessa Edwards Foster added:

We want to ensure people note this is a non-violent protest, and that we should avoid working to our detriment by being profane or verbally attacking.

You can find out more about the protest by going to NTAC blog.