Tom_G's idea is a good one. It deserves to be seen through.
The last rally I remember HRA organizing was in 2013 I believe, and I attended. Were they to organize another, I would attend that too.
They haven't. In fact, they don't even deign to respond when asked for support for something not organized by them.
I, and many others are tired of waiting. We'll take action if HRA or HDF won't.
Notice for this event may be short, the day is inconvenient due to the machinations of a government that doesn't have our best interests at heart. However, in an election year, with a POTUS that is openly hostile to the Constitution and especially the 2nd Amendment, I believe it is nothing short of foolish to fail to get our message out to the people, and especially our legislators.
All it takes for Evil to prevail, is for good men to stand by, and do nothing.
This is just the beginning.