It's only "extreme" if people are in actual poverty, where shelter/food/basic needs aren't met. Can't afford the latest iphone =/= poverty.

Plenty of people who consider themselves economically disadvantaged have much nicer and newer cars and phones than I do. Priorities.

Income disparity is just fine, it's often merely choices people make, lifestyle vs. time dedicated to making money. You have a wide array of options to balance work (which includes education/training) vs. money. If people choose to not make the effort, and *then* want what other people have it's called envy (maybe entitlement these days).

But in a democracy it is the interest of middle/upper class to vote for policies which make it easier for lower class to improve. Example I'm all for helping economically disadvantaged youth (regardless of location or ethnicity), society has an obvious and very long standing duty to develop youth. But not to enable them for their entire adult lives.