I'm speaking in particular about the US, and it's most certainly not wealth disparity. It's more geographically and politically motivated divide in the US.
Most people that would participate in this wouldn't even look at it in terms of wealth or globalism/nationalism.
Probably a better way to describe it would be a civil war along ideological lines between those that want to fundamentally transform the US vs those that want to hold onto traditional values and sovereignty.
More likely a civil war with one side of those who hate the US, Socialists, Communists, Islamists who want to destroy it within so that, they can take power versus those who love the US, the Nationalists, American Patriots who realize that freedom does not come free! That the freedoms we have arose from the bloods of American Patriots who died to protect our way of life! Nationalism is not a dirty word by the way! Only the extreme liberals hate it! Take note the Chinese, Japanese, Vietnamese, Polish, Koreans (South and North) love their countries. Does the extreme liberals condemn them? Of course not, it is a debate that cannot be won! Majority of the US citizens love the USA! However, we have extreme liberals like the Socialists, Communists and Islamists among us hate the USA while, continuing to sponge of US taxpayers and live like kings and queens! Those the US can live without! We do not need those worthless leeches!