In a SHTF situation the normal LEO, police dept. county sheriff's dept would not be functioning, but sooner or later they will come back on line (JMHO) and when they do the laws of your state will be all important.
Know your state laws and bless the states that have the Castle Doctrines in place.
When and if hopefully ROL comes back on line it may be your word against the bodies buried out back.
Therefore I would keep a complete daily log with info about the times and events as they happen.
BTW I personally would fight to maintain or restore ROL at county or state level.
Make no mistake about it, when the UN forces show up, your county and state government and law enforcement are your best protection and those laws in effect before SHTF will be your only defense.
Don't believe the county or state government could stop the UN forces, but the laws of your state will be a defense in a trial if they are considered by the new powers coming on line.
Power vacuums always being power hungry people, and a nations and or UN to collect the oil, coal, and other resources, and these hunter predator can easily over run a nation at war with itself.
When they deal with out state, county and you and I, we need to have records and just cause under the laws as written before the SHTF.
Just my thoughts, yours may differ and be even more correct than mine please share!!!!!