[Hiddigeigei]

"silent enim leges inter arma" ... Silent indeed (are) laws, during/between arms (warfare)"
Inter arma enim silent leges ... During/Between arms (warfare), indeed silent (are) laws.
i.e., During armed conflict, laws really don't apply.
Sorry, I still don't get the connection. I can't imagine any other meaning.

[jessduntno]

At the time when Cicero used this phrase, mob violence was common. Armed gangs led by thuggish partisan leaders controlled the streets of Rome.