We're in the longest period of peace in thousands of years. Check out this cool graphic that puts in perspective: http://www.fallen.io/ww2/
People are mad about politics, but I don't think it's any worse than the cold-war, kennedy assassination, mcarthyism, being drafted to Nam. Reagan was a movie-star who became president.
Innovation is the fastest its ever been.
It's hard to say how corruption is changing, and whether accountability is greater or lesser now.
People are upset about the environment now, but consider stuff from the last 100 years (leaded gasoline, the banned-pesticides, radioactive toothpaste, etc etc).