I think most economists generally agree with that position, but I would be careful about using the word "protectionism". The way you're using it, my guess would be you support "protectionism" in cases where only an institution like a government or central bank can correct market failures. But the way protectionism, as I understand it, is normally used is in reference to protecting certain groups via tariffs, price controls and the like. I'd wager most of us (and most economists, from Krugman to Friedman and every Jew between) are against such policies.
Edit - I just read red's quoting of your posts and I guess you are for actual protectionism. So never mind. lolz