Reply #79: I do not think those words mean what you think they mean.

[LooseWilly]

From Merriam Webster's on-line dictionary:
dis·sent
Pronunciation:
\di-ˈsent\
Function:
intransitive verb
Etymology:
Middle English, from Latin dissentire, from dis- + sentire to feel — more at sense
Date:
15th century

1 : to withhold assent 2 : to differ in opinion


From a randomly chosen google match:
"Constructive criticism is criticism kindly meant that has a goal of improving some area of another’s person’s life or work."
http://www.wisegeek.com/what-is-constructive-criticism.htm

In other words... dissent is a disagreement of opinion. Constructive criticism is criticism meant to improve one's approach to something.
Constructive criticism does not admit the option of the Whole Whatever It Might Be being wrong. It only admits of efforts to improve the Whole Whatever It Might Be.

So, what you are actually implying is that We all have to get on board with everything Obama does, and the only contributions any of us can make are little tidbits of tactics meant to make Obama more effective at accomplishing whatever he, in his wisdom, chooses to do.

That would, in fact, be a stifling of opinions...