Man shot and killed after singing 'Somos Mas Americanos' at karaoke night

In Houston Tx a man was shot in the head after singing 'Somos Mas Americano' at a local restaurant. The man was approached and confronted about the song he chose to sing. An altercation occurred and the man singing karaoke was shot in the head. The shooter is still at large. 

Obviously, citizenship is a sensitive topic to certain people who may not feel like immigrants have the right to be here. The man shot used lyrics in a song to express how he felt about being more American to patrons of the restaurant. I have to ask myself where on the class and stratification latter the shoot found the man singing. The shooter shot this man right in the head which leads me to assume that the shooter saw this man as someone who is insignificant and did not deserve to be there.