Don't under estimate some one

 During the Sri Lankan riots, this monk "gives back" tear gas to the police.

But shouldn't such a monk be tolerant, kind, and perpetually peaceful and loving?

First off, many of them are not exactly saintly and composed individuals.

Some of them are former gang members, and some even have criminal records who were given the option of monastic life or prison.

Some of these men were juvenile miscreants who spent many years as monks, while others spent many years as street thugs and have just been monks for a year or two or a few short months.

Or would you like to start this one off?

Moreover, arguing is very appropriate.

Once you do,