I totally support the protests. If ever there was a time to be the voice of an oppressed people, then it is now.
I lived in China and Hong Kong (pre, during and post handover) and travelled to Tibet and had a lot of Chinese friends and work collegues. As far as I was aware, no Chinese person I knew themselves ever felt that by supporting the movement to Free Tibet meant that they personally were disliked or threatened. It is not the Chinese people who people are protesting against, it is the Chinese authorities.
Having had personal experience and discussed many issues with Chinese people in China, HK and Tibet I personally loathe and detest many aspects of the Chnese governemnt but certainly do not have any ill feeling what so ever for the the Chinese as a nation. That would be ludicrous! However, just as discussions get very heated where certain highly emotive issues are concerned, if I were discussing the Tibet issue with someone who took the Chinese authorites official point of view, regardless of their nationality, of course emotions would run high. I have a number of Hong Kong Chinese and British Born Chinese friends in London some of which I know were planning to protest today (although to what extent I do not know).
Unfortunately, although I do think it is sad fot the athletes who are competing in the Olympics to have such negitive issues to deal with, I think it is very hard to differentiate from the true meaning of the Olympics and what it stands for when it is being hosted by a country with such very questionable human rights records.