The quality of Boy Scout groups varies widely, and it has everything to do with the particular scoutmaster. I've heard mostly good stories*, but you do get some douchebags in the mix just like with every other institution. No firsthand stories of pedophilia, mind you, but I did hear a firsthand account of rampant anti-Semitism in one particular group. As a general rule, the douchy groups tend to get weeded out, because there is no larger hierarchy moving Scoutmasters around to different troops, and there are always several troops in any given area for parents to choose from.
*Little known fact: every single person I have ever dated has been either an Eagle Scout, or a son of clergy. Mr. Clod was the only one who was both. 