Unfortunately we are preaching to the choir here as the Young People don't really want to do it themselves, which is pretty terrible.
I would say the Middle Classes (Millenials in particular) cause more problems than the Rich people (in my personal opinion of couse), as they want to copy the Upper Classes whilst whining about pretty petty stuff that neither the Rich or Poor/Working Class care about. (Representation of Minorities, Hard Done by Refugees, etc) The parents of the middle classes have likely didn't have to struggle in the 80s/90s and have pretty much gave their children an otherwise comfortable life, but for some reason this generation think that hopping onto these Crisis's will make them look and feel better about themselves but not really going all in to help others and understanding why they happened in the first place.
I personally don't believe the masses are going to try and help improve themselves because it is easier to use blame than to take into account their own inaction, but what we can do is try and make the changes on our end and hopefully it can influence others into doing the same.
Being kind to others, making a living and being the best you can be on a professional level (which is indeed hard), Volunteering to help good causes (I did this for awhile for a Community Band) and doing your bit for the Environment can go a long way for personal growth, satisfaction and well-being, but I don't think the First World Countries are the main problem in regards to Climate Change. The ones clamouring for that change should be talking to India/China about it. (good luck with that though)
What is funny is that scientific irrigation is being looked into by the Generation X people who are now reaping benefits from better Crop Growth/retention and using that as a case for improving the Climate with profits being a nice bonus incentive for doing it.
You are right about this generation of kids/young adults being lazy, it's just amazing how they go from job to job, not considering building up their skill-set, nor their reputation and think they deserve something out of it. That is not how life works and it will seriously bite them in the arse when they get to their 30s/40s when future potential employers look into what they achieved in their life so far.
Social Media doesn't account for anything when it comes to trying to improve or show their true life values and it will come to haunt them in the future, which is why I "never" show off my social media activities at work or even at home as I use it for personal use (and it doesn't reflect on me truly as an individual).
Currently, they are going to blame everyone and everything including the Rich, but regarding the Rich in particular, half of those actually worked hard to get to where they are today, and tend to have a unique political view on things that the Youth won't recognise or even hate.
Edit: Talking from a UK perspective as well, but understand if there are differences between UK and US.