no, they clearly exist insofar as it is immediately clear when they are being infringed because violence is necessary to infringe upon them. In the absence of violence, as a threat or as an application, people behave in a natural way. They assemble property, associate and assemble, think and speak and decide how to dispense with their bodies. It requires intercession for these things to be changed, ergo rights are a description of the natural state of human behavior.