No why would it. They probably are already taught self defense but are cowards so will go straight for their guns because they just cant wait to use them. Shoot first ask questions later.
Yes they have been taught selfdefense but only basic. And the reason they pull they're gun is because it's they're protocol then shoot if the suspect tried to charged with the intent of hurting them. That's why they are being called coward.
But teaching them hand to hand combat martial art will improve their skill apprehending the suspect without shooting.
Plus it will improve their discipline. I know miantaining it will be hard but it will lower the accident killings.
Me myself is not huge fan of cops. But I feel bad about the other cops being discredited because of the accident killings because they lack of hand to hand combat.(I'm not saying every cop lacks in hand to hand combat.)