Christians are not supposed to physically oppose our opponents:
"For we wrestle not against flesh and blood, but against principalities, against powers, against the rulers of the darkness of this world, against spiritual wickedness in high places." Ephesians 6:12The important point here is that the spiritual is greater than the physical.
Our physical life is short and passing. There are no eternal consequences.
But, we should struggle and fight hard for eternal, spiritual things.