Human nature isn't the same for everyone, think about fight or flight reaction. So some people demonstrate violently, and others peacefully. I think the people

Human nature isn't the same for everyone, think about fight or flight reaction. So some people demonstrate violently, and others peacefully. I think the people who have a long-term pessimistic opinion are only that way because they perceive what humanity is based on their own predispositions. Same is true for long-term optimistic perspective (even though that was omitted as a choice in original post). Being short-sighted or having a long term perspective aren't coupled with optimism/pessimism. And politically both parties participate in both - most people only care about unemployment within next couple of years, not unemployment for next 70 years, so politicians have to cater to us, and they are conflicting solutions.