It would be more appropriate, frankly, to talk about DOMESTIC violence now, and leave off the part about 'gun violence,' that being a mere subset of the larger problem.  Domestic partners are killed by significant others on a sickeningly regular basis, and the instrumentality used is not the problem--it's the killing.   Tacking the word 'gun' onto 'violence,' as if the tool, somehow, is what makes the killing worse, is what stops any meaningful conversation cold.