You asked this earlier today. You'll get about the same answers.
1. Why would republicans need a training ground? Real life and the ability to learn from it is what makes a republican after they have been taught to be liberals in school.
2. How do you know the shooter killed republicans? Is it because only republicans willing serve their country?
3. To whom is he a hero? Not to me or anybody I know. Perhaps he is to the liberals, but not to any patriotic Americans.
People like you, using the death of honorable people for your childish political remarks, are disgusting.