I'm sorry, allow me to apologize; I had no idea that LEO were not allowed to conduct inquiries based on on questionable behavior, which essentially equates the probable cause to inquire what the hell that guy was doing, even though I did it for several years. I guess all that training I received as an LEO was bullshit, right?
I don't care about any training you may or may not have had. This man's actions in and of itself isn't probable cause for a stop. The federal ruling has stated that. You want to argue that, take it up with the courts. Just like the open carry videos we've all seen, LEOs routinely stop people for open carry weapons, even stating that is the sole reason for the temporary detainment, questioning, etc., and yet, they're not supposed to stop them because it's legal jurisprudence that an exposed firearm is not reason enough to warrant that type of response. Does that stop LEOs from continuing to do this? No. But they do it anyway - in clear VIOLATION of the 4th circuit ruling amongst others. You seem to think the police should be allowed to flaunt the rule of law and continue behavior that violates their oaths when they do this.
Man + filming federal building + at night + who happens to be carrying firearm = not suspicious to you?
Whether it's suspicious to me or not is irrelevant. This a matter of legal jurisprudence/precedent. The courts have ruled that behavior is protected under the 1A. When a LEO interferes w/ someone exercising a constitutional right, they're behaving unlawfully. i.e., they themselves are breaking the laws they're supposed to defend. Just because a LEO thinks a home is suspicious, it doesn't give him the justification to kick in a door and search the premises w/out a warrant or REAL probable cause like screaming from within. I don't think you'd be in favor of police violating the 4th Amendment due solely to suspicion. Yet, that is what you're arguing in favor of - police acting outside their proscribed powers.
Give me a break man; you are just talking out of your ass if you think this behavior is acceptable and shouldn't draw any suspicion.
It's protected free speech. LEO can have their suspicion. I don't give a damn. It's when it veers from suspicion into a violation of the constitution, and then it's serious. Also, you're conflating suspicion with probable cause. One is a feeling, the other is a legal justification. You, as a former LEO, should know this. Unless, of course, you're just talking out of your ass.
If you have this attitude, then I presume you're okay w/ LEO stopping open carriers based on fact they're open carriers and nothing else, right? Or, let's say a low rider pulls up alongside your squad car and it's full of black males dressed all gangsta, listening to rap music and they begin to mean mug you (stare you down intently). Is that suspicious behavior? Yeah. Is it probable cause to stop their car and search it? Nope. You seem to be arguing it is, though.