Honestly, I see rudeness, violence and poor behaviour from older people as equal as I see it from younger people. The difference is, younger people are more naive, less worldly experienced and have more testosterone in their system which guides them to stupid decisions. Worse, they have many self serving idiots guiding them to their actions, such as the fools promoting the anti-American protests. We were all young once, some of still are (or remain young at heart), we know that someone aged 18 or 19 is not even the same person at age 40. In some cases, they are FAR different people.
Older people who are still stupid and violence have just poorly developed skills, stunted mental and emotional growth or are just inherently angry.