I have to put this in to perscpective. I am all for LE doing what is necessary. They have the training to deal with perceived danger and it is their job to respond to a call that they get from the public. LE has the badge, gun, and the authority given to them by the law. The average person? depending on the situation maybe. If you are breaking in my home or something like that then yes.
But so help me God, as an average citizen if you think about following me or asking me any questions about where I'm going or whatever and I'm just minding my business I will see YOU as a threat and as a licensed gun owner in Texas I will use it. See our laws here work both ways. People in Texas know that its a bit wild and wooly in some cities. We dont have many road rage incidents. People here want to be left alone. I think Texans are uniquely southern with an independent streak to the people. I say that with love, I'm a northerner.
With that said, I would have to see police protocol regarding drunk individuals and how the rookie should have reacted. Then think about this, do you know how many drunk and crazy acting individuals LE run upon every weekend? Come on, it's dallas. I cant tell you how many drunk idiots leave clubs, fight and even try to throw things at officers. The officer was a rookie and was probably scared and jumped the gun.
Then there is the socio-economic element. I know for a fact, that there have been massive parties in the plano area where underage drunk teens have resisted arrest and everything. Plano is an affluent suburb I grew up in. Police have broken up many a party. No one got killed. A few Tazed. Some slammed into a police car. Granted Plano is a different city, but I'm sure it applies to those wild Frat parties around SMU as well.