"To take part in this brothel through the payment of my taxes, that had become to me unbearable"

Yannick Noah's quote talks to the concept of being forced to participate in something that one discovers ethically wicked. In this case, the speaker is referring to the payment of taxes, which is a needed part of life in many countries. The speaker discovers it intolerable to be forced to participate in something that they find ethically wrong, and this is likely due to the fact that the taxes are being used to fund activities that the speaker discovers objectionable. This might include activities such as war, or the funding of certain government programs that the speaker disagrees with. The quote speaks to the concept that one must not be forced to participate in something that they discover morally incorrect, and that it is essential to stand up for one's beliefs and worths.