"Jesus would rather kill, not marry, gay people" - Franklin Graham

[Astreja]

A poor execution doesn’t mean that the plan was flawed.

It can if the plan attracts unsavory people who cause it to fail  

 It’s not saying that you cannot judge those who are abusing the philosophy, but that the abuse doesn’t reflect on the philosophy itself.

Yes it does it as you must ask why your philosophy is so ripe for abuse and why it attracts abusers in the first place

If I might contribute my $0.02 CDN, a part of the problem comes from a sense of exclusivity, an "us versus them" mentality.  Whenever a group sees non-members as a problem to be solved, the group concentrates its resources to try to achieve that goal.  This creates a nexus of power that could be used beneficially, but all too often someone is attracted to the power and then proceeds to abuse it.  This can happen in any group, any philosophy, but IMO a sense of mission and urgency makes it easier to exploit and misdirect the group.