The plea for a positive action without reward

After the +association does their work in other aspects, including the interlocutor; and the +association see is important the interlocutor make an important action, that generally will not generate any reward to him,  the +association will proceed to politely make the plea.
"Mr. xxx we beg you if you could do yyy for the zzz reason, to get the xxx1 reason, even when you will not get any reward or benefit from it, and we understand if you don't do is because that is the correct and the best decision you can do.".
I remember clearly a situation when the government of EEUU was going to release to the market minerals that was going to prejudice the economy of one country, then a woman made an educate plea, that avoid that action; and it help to keep the economy in a critical time, the government of EEUU didn't receive nothing, neither the woman, but for that country the benefit was done.
Is important to include a clear and brief reason that justify that action.