Any collateral issues to worry about, like one of the hoodies showing up at your doorstep with a weapon etc?

Use that as a weapon.  

I would never search a vacant home without my weapon.

All it does is make them look like self-righteous jerks, running other people down.Generalized complaints about the lack of education in this country that are not directed at a specific poster aren't included in the above rant.

Who knows how he would have behaved or if he would have been carrying a weapon?

They were to shoot the people with Guns and holster their weapon when someone wasn't holding a gun.The result showed that if the person they were approaching was black, they were either quicker to shoot (if they had a gun) or slowing to holster their weapon.

I would obviously want to protect myself to be safe, but is a gun a common weapon for a landlord?

Don't get me wrong -- there's no reason to spend every waking minute learning about real estate investing, but it also wouldn't hurt to pick up additional strategies while you're going to school and adding additional weapons to your arsenal.

It's a weapon specifically designed for physical force and held by one of two members in military-style uniform of a group with a known violent history.

But if I was going to lie I would have snuck the weapons in and say, SEE WE FOUND THEM.