The fact that some people are zealots should have no bearing on whether one drives less, recycles, or turns off the faucet while brushing one's teeth.
(some people; are; zealots) (The fact that some people are zealots; should have; no bearing on whether one drives less, recycles, or turns off the faucet)
some people The fact that some people are zealots
are should have
zealots
no bearing on whether one drives less, recycles, or turns off the faucet