Depends on whether or not it is understood in the sense of Transcendental Meditation. As I understand it, and please correct me anyone, if you get enough people to "visualize" something especially simultaneously, then some mystical power makes it happen.
No. Read the lyrics.
Imagine there’s no heaven
It’s easy if you try
No hell below us
Above us only sky
Imagine all the people
Living for today, I
Imagine there’s no countries
It isn’t hard to do
Nothing to kill or die for
And no religion too
Imagine all the people
Living life in peace