Luke 11:23 He who is not with Me is against Me, and he who does not gather with Me scatters.
I like to think of these words as encouraging us not to use the wrong stuff to try and do the right stuff with.
We can use a metal dish to mix things up with and even place in an oven, but we cannot use it in a microwave. We need to choose our tools and choose the time to use them correctly.
When we come forward to discourage people from doing wrong or following evil, we should not use evil to try and accomplish that with.