The answer to all of those is multiple "it depends." It depends on the characteristic being used to try and treat people differently. It depends on what exactly is being done to treat them differently. It depends on the process being used and why it is being used, and it depends on more besides. In the law, everything is rife with exceptions. Let me draw up an example using the first on the list, behavior. If someone possesses evidence of a crime, the government can compel them to turn it over. It's even criminalized not doing so, as obstruction of justice, and that's ok. Except when it's not because the 1st amendment protects the freedom of the press and you'd be charging a journalist for doing their constitutionally-protected job. Except then the courts can hold the journalist in contempt and put them in jail without formal charges.
No, that's not what this is about. It isn't what you've done regarding the topic in the past and everyone knows its not what you're going to do here. You demonstrated that the instant you chose to deny that the work explicitly explaining the Founders intent didn't do anything of the sort. You said "in today's political climate people don't care why the court rules. . ." I'm not people. But apparently you are.

