[littlexsparkee]

They tend to because typically people in the same stage of life tend to have similar interests to defend but like you say, it could theoretically come from politicians of any age. Younger cohorts are much more diverse and less likely to espouse these ideas, seeing them as extractive. This is where the stereotype of getting more conservative with age comes from - it's defensive wealth preservation.

[lostmsu]

I think this is changed by the Internet in the same way as WWW forces globalization. In a generation or two when Internet-illiteral generation dies out we will have cross age homogenized.