CROP walk = supporting proselytizing?

I did this once as a kid; it was an unpleasant experience at best. It's basically kids panhandling to make money for a Christian religious organization, and VERY little of it gets to the people who are supposedly receiving help. It's a very unpleasant memory for me; I was very disillusioned, and I'd NEVER send a kid on this, EVER. Find something to do with your time that actually matters and will actually help; I can promise you from experience that this ISN'T it.