snip
Tell me, if some minority kid runs up, grabs a pot of your petunias off the front porch and takes off are you going to kill him? You'd be legal in Texas you know.
I know its rude to respond to a question without an answer, sorry.
But, consider this - thieves start their careers somewhere. If they die as a consequence early in their career, how many community members are spared being victims?
In your example, would deadly force be a proportionate response? For me, personally, no. I'm very happy with Texas law as it stands now. I'll just have to be willing to accept what my fellow Texans decide in each circumstance (both the actors involved, and those who judge their actions).
In particular, I'm glad Mr. Horn acted as he did. Who's to know in the case of burglars which ones might be violent or non-violent? I like the decision to not take any chances that they may have already done violence, or may do so in their next criminal action. If you catch 'em red-handed, then try to cause them to be arrested, shoot 'em if that's not possible. Its what Horn did and its the right thing to do in your own neighborhood, IMO.