- Against the war
- Environmentally concerned
- Humanitarian (gay rights, women's concerns, race issues)
- Egalitarian (concerned with inequality, poverty, power abuses)
I could go on, but obviously liberals have taken a moral high ground, although some conservatives have taken an equivalent moral high ground, although many would disagree since the most vocal Republicans are by their nature of the low moral ground, e.g., only concerned with money and business.