They are worried about lead entering the environment? Where do they think lead comes from in the first place?
Really. The time may be coming when it will become necessary for us to sacrifice a few of them for the greater good of all, especially the children. I mean, who could be against the children?
Probably few of them know that metallic lead (used in shot and bullets; more bioavailable and poses threat even from non-ingestion exposure routes) comes from lead ores like galena (lead sulfide), where the lead is bound up and not as bioavailable.
So what is your point? Are you suggesting that anyone who shoots has to go collect any lead he shoots and complex it, or provide chelating agents to wildlife? ;-)