How To Influence People

What we are doing is all wrong. It’s terrible. All that stuff you have worked so hard on is useless. We are all going to hell in a hand basket. We had better do something really soon in some kind of way or we are screwed.

OR

I have an idea as to how we can get better at what we do. I have noticed X causes us grief. I think if we do Y we can reduce the impact of X by Z. Do you have time to talk about how we could implement my idea?

What do you think works better? Which approach has the better chance of winning supporters?