You cannot really blame the whole PRC Chinese for wanting to destroy 5000 years of Chinese history...The Cultural Revolution was launched by a 70 year old man (in 1966) who desperately wanted to hold on to power by using the excuse that revolution need to be continuous and the old Chinese systems need to be destroyed and be replaced by Maoism.
In any case, just within a year when the misguided young Red Guards went into excess, Mao immediately put a stop to their activities and send them down to the farms to be 're-educated' by the peasants'. However, why the Cultural Revolution lasted 10 more years and created the subsequent untold damages was because he had created a monster by allowing the Gang of Four to prosecute and destroy his political opponents, rob the country and impeded the progress of China for 10 whole years. The blame should squrely be placed on the old man, not the Chinese people as a whole.
The PRC Chinese leadership and people now have a healthy aversion to anything that hinted at 'Cultural Revolution'. Witness how an upstart and bloody criminal, corrupted Bo Xilai was brought down without mercy as he tried to revive the old Maoism and launch another 'Cultural Revolution'. Purpose? So that he could get on the Political Bureau Standing Commitee as a first step and eventually work his way towards the PRC number one position. Luckily more rational minds in the Chinese leadership prevailed and put a stop to the Bo attempts. Many distractors of China from the West would really love to see China in another political power mess and thus slow down or destroy the last 30 years' progress since the end of the Culural Revolution.
The rise of China is inevitable given its size, resources and huge population. With the West and even the USA in decline, where then would the impetus for global progress and economic success come from? Ah Neh or other BRICS? What would you prefer?
Or do you want a China in bloody mess and as a people being equated with dogs, remember "Dogs and Chinese not allowed"? We are not being chauvinistic here, but as descendants of the Chinese race which incidentally account for one out of four of the total world popultion, we should be proud to be counted as a Chinese.