The BOD has stated its reason very clearly:

"Although we all believe everyone has a right to vote and donate as they see fit, it has become apparent that the fallout may affect more than just Mr. Cooper. It may also affect the employees and the shareholders of Cooper Firearms."

The Fire Department would not be happy to have amongst its members one who donates to the "Association of Arsonists".

JC

"...it is always advisable to perceive clearly our ignorance."ť Charles Darwin