I think probable cause is a good idea. I also stated that probable cause
is not a criterion for such activity in the 4th Ammendment. Such activity
is lawful only when due process is followed. Warrants can’t issue without
probable cause, under the 4th. However, warrants are not required for
taking property, life, effects, papers as is written in the 4th.
Regarding subjective probability, some police officers can take property if
he believes it is being used in a crime and if he can’t take the suspect
into custody for some reasonable excuse. For instance, game wardens are
often said to have more power than the state police; they can apprehend
property when they can’t take suspect into custody (as long as they report
the taking of property to a superior within 24 hours).
In France, after the terror incident at the concert, police raided homes
without probable cause. This was lawful in France.
So, what is so bedrock about probable cause if it is not required in U.S.
and in France? Again, nothing in 4th requires probable cause for taking
property.