As a Greasy Swarthy Furriner my position is:
A) NO, I dont like one bit the existance of covert surveillance programs, even if they are a "Necessary Evil"
B) NO, I don't know if the US would be less secure without them.
C) For all their overreach and screwups I don't think that the US Federal Goverment is full of sociopaths or even idiots (I'd say a quater full).
D) Do I think that Snowden was right leaking whatever he leaked on the US "Prism" surveillance program? I don't know, but considering what a bumbler he was looking after his own skin, I am not so sure that all he leaked was accurate.
E) I'm afraid that Daniel Ellsberg is wrong, I don't know how true are the allegations that Bradley Manning has been mistreated during his incarceration. But I suspect that being a High Profile case (just like Snowden's) even if the US Federal Goverment is composed of sociopaths and syncophants they'd know that it would NOT be in their best interest to mistreat either of them,
F) After reading this paragraph by Ellsberg:
I hope that he finds a haven, as safe as possible from kidnapping or assassination by U.S. Special Operations forces, preferably where he can speak freely.
I have decided that he's full of shit.