I did a search but couldn't find a thread about this.
Someone sent this to me, and it seems like a good idea.
The National Law Enforcement Officers Memorial Fund is trying to get 25,000 signatures to get Congress to make a recommendation to the Postmaster General that a commemorative stamp be issued to honor LEOs killed in the line of duty.
They are doing pretty well. They have 22,406 as of this post, so they are really close.
If you are interested in signing the online petition,
here is the link.
I personally like spending the extra money for a "charity" stamp. I am using the "Stop Family Violence" ones currently.