Plus any so-called benevolent organisation that posts a diatribe against a corporation (Colgate-Palmolive in this instance) because it has decided not to donate money is also a little suspicious.

If the corporation was initially good enough to be solicited by this organisation for a donation in the first place, then Colgate-Palmolive declined, what sort of message does this sort of behaviour send to others?

This smacks of blackmail to me.