If you caught a piece of sh@t breaking into your vehicle?

would you have the right to blast them. I have always wanted to get a 9MM. Now i think i will, just a matter of time. My jeep was stolen last night. I think if i would have caught them in the act, my adrenaline would have kicked in an i would have wound up ripping their head off. I could even see there footprints in the snow.