It is not a secret that China is not structured similarly to a western representative Democracy. The Chinese board has almost absolute say in what is going to happen in the country. That is not always a bad thing, but in order to ensure stability, China has a shaky track record when it comes to human rights. It is rare that you hear about conflicts or revolts in China because they get put down so quickly, in China opposition is easily silenced. There is a vast number of political prisoners in detention in China that would be considered outrageous in any western nation.
Yes, China forces too many people into political detentions because the country is essentially a communist nation and the government wields a lot of power. In China, it is common to be imprisoned for speaking out or protesting against the government, hence because of the country's sometimes oppressive laws a lot of people are imprisoned for speaking out.
The government censors the press, the Internet, print publications, and academic research, and justifies human rights abuses as necessary to preserve “social stability.” It carries out involuntary population relocation and rehousing on a massive scale, and enforces highly repressive policies in ethnic minority areas in Tibet, Xinjiang, and Inner Mongolia. Though primary school enrollment and basic literacy rates are high, China’s education system discriminates against children and young people with disabilities. The government obstructs domestic and international scrutiny of its human rights record, insisting it is an attempt to destabilize the country.
The Chinese government is still one of the most oppressive regimes in the World. Political freedoms, especially free speech, are strictly forbidden by the government. Many in China have been imprisoned for speaking out against the government. In addition to limiting speech, the government still does not respect a lot of religious liberty as well. In short, China does force too many people into political detention.