> Effective law enforcement often requires undercover work, information gathering and surveillance of suspected criminals. Such surveillance should be based on reasonable suspicion of criminal activity – and ended when that suspicion is dispelled.
> However, when conducted without suspicion of criminal activity, especially when targeted at unpopular political groups, or when intended to profile religious, ethnic or racial minorities, it violates the right to be free of unwarranted government intrusion and to exercise free speech, association, and practice one’s religion. The harm to those under surveillance without suspicion is made worse when the information collected about them and their activities is shared by local, state and federal law enforcement, military and security agencies and stored in multiple databases, just in case it might ever become useful.
> In addition to chilling speech, surveillance without suspicion actually makes law enforcement less effective. When authorities are swamped with mountains of irrelevant and inaccurate information, their ability to properly analyze data is compromised. Ultimately, these practices make us less safe.
https://www.aclu-wa.org/pages/surveillance-without-suspicion
Right now, your social media might be mined to classify you as an "anarchist", after which you may be pulled over and arrested when you are driving close to an anti-war protest. To me, that does not sound just at all.