this is ironically, a fallacious argument.
The implication here is that violence literally never solves problems. The actual implication is that violence generally doesn't provide a reasonable solution to problems, which everybody would be inclined to agree with, even in the case of military/police conflicts.
Have a better argument next time :)
the people who say "violence isnt the option" imply that the issue is that violence never fully solves issues, because it doesnt. That's true. It only gives you power, which is a useful tool in asserting control, which is ultimately what leads to solutions.
The people who are on the other side, are arguing that this is an absolutist statement, and therefore, must literally mean "violence is not the answer" i.e. you should fuck each other until a solution arises. Which is obviously a facetious argument.
"violence is never the answer" is not a particularly good phrase, but when commonly understand my the broad population, it's not as problematic. Though it is sort of poetically true.