You have never heard about a roadblock perimeter around a crime scene?
Hell they set up roadblocks to look for drunk drivers. Everyone gets
stopped and interrogated. There is no presumption of innocence there.
They will even stop vehicles towing boats coming up out of the keys
during mini season looking for illegal lobsters.
You give up many rights as soon as you get in your car and the courts
uphold it. I think a lot of it is wrong but I have to live in the
world we have, not the one Jefferson dreamed of.
Difference is in your statement:
"You have never heard about a roadblock perimeter around a crime scene?
Hell they set up roadblocks to look for drunk drivers. Everyone gets
stopped and interrogated. There is no presumption of innocence there.