Oh, I love the defenses that are being used for this.
"It isn't about the pay, it's about the joy of working"
"Why should we pay the same for a cripple when an able-bodied person can do the same"
"It is about giving meaning to those less fortunate"
"We strive to only help them, we're non-profit after all"
"Why should I lose part of my six figure salary to help the people the organization was made to affect"
Seriously, burn them all down.