Is there a good killer and bad killer?

The Guard - Mr.T.Rajasekaran

Few days back a major train accident was averted thanks to an observant guard, who heard an unusual sound as his train (Egmore Express) passed the particular spot and immediately informed a station master through-walkie talkie, who in turn acted swiftly to warn rockfort express driver. You can read the related news item here. http://beta.thehindu.com/news/states/tamil-nadu/article454125.ece.Thanks to him hundreds of children, women and men were saved on that day.

A blast was set on the track to protest the visit of Sri Lankan President Rajapakse to India. Since he led the mass killings of Tamils in Srilanka these miscreants (Pro-LTTE supporters) blasted the railway track. I have a question to these people. What is the difference between them and Rajapakse? He killed people in Srilanka and these people want to kill here. Both target civilians. People may have their own reasons and explanations but end of the day nothing separates people who want to kill, irrespective their reasons.