why not?
this expression is widely used by many historians and social scientists.

"There is now a desperate need for what Ben Pimlott once called a "popular front of the mind" - a cross-party (and non-party) *movement of opinion* to defend basic liberties and democratic principles, not just against the open enemies enrolled in the terrorist jihad, but against the false friends who cannot see that in undermining due process and respect for law they are doing the terrorists' work for them."
http://www.newstatesman.com/200508150006

"Wilson had “a passion for interpreting great events to the world,” he had told his first wife. He wanted to “inspire a great *movement of opinion*.” "
http://www.dailyreckoning.co.uk/article/inspirationalamerica...

"Speaking in 1998, the network's chairman, Gerry Stoker, said: "We have the prospect of many, if not most, of our major cities being run by a mayor by the next election - whether the incumbents like it or not. I do not think this *movement of opinion* can be stopped." "
http://society.guardian.co.uk/mayorquestion/story/0,,912099,...

HTH