Returning kindness with hatred

I was watching the news clip on the Singaporean manager who was beaten in Medan. Looking at the video on how aggressive and brutal the attacker, an Indonesia policeman, beating up the Singaporeans for a few minutes, made my blood boiled. I felt so angry.

The way the Indonesian kept hitting and kicking the Singaporean who was on the ground, afraid to hit back as the attacker had a gun in his hand