Some observers fear that it is going to become a nasty general election battle. Unfortunately, this is not the first time that violence has erupted resulting from a political rally and it may not be the last time. Hate attracts hate and violence beget violence.

Those opposing the presumptive GOP presidential nominee attempted to knock down barricades, while police were physically dragging away some of the most active protesters.

Violence Erupts At New Mexico Trump Rally http://n.pr/1TDv300

Protests turn violent outside Trump rally in New Mexico http://hosted2.ap.org/APDEFAULT/3d281c11a96b4ad082fe88aa0db04305/Article... …

Protesters throw rocks and bottles at Trump rally http://upi.com/6322262t via @upi

Police in riot gear move to quell anti-Trump protesters in N.M. http://usat.ly/1TD6Kze via @usatoday

Protesters throw rocks, bottles at police outside Trump rally in New Mexico http://reut.rs/20zvzy4 via @Reuters

Cops Injured as Trump Protests Get Violent in Albuquerque http://nbcnews.to/1TVwV1m via @nbcnews

Trump protesters smash door, break through barriers @CNNPolitics http://cnn.it/1szrIGj

Protesters clash with police outside Trump rally in New Mexico http://www.cbsnews.com/news/protesters-clash-with-police-outside-trump-r...

Chaotic Scene Erupts Outside Trump Rally in New Mexico - ABC News - http://abcn.ws/246Uf1G via @ABC

A continually growing list of violent incidents at Trump events: http://www.slate.com/blogs/the_slatest/2016/03/02/a_list_of_violent_inci... via @slate