Venezuela has been since the beginning of the XX century a country heavily dependent on oil.
When oil prices have gone up, the government's popularity has increased, when they have gone down, it has collapsed.
The Venezuelan opposition is not a bunch of "rich white people who want Venezuela to go back to what it was before Chavez. The Venezuelan opposition is composed of many views, like in any other country.
Hugo Chávez Frías accuses the opposition of being coup mongers. Hugo Chávez Frías is a military who only became known due to his bloody coup d'etat of 1992.