Looks like they mad because of not being woken for Ramadan Breakfast....
The guy was seen pouring lighter fluid on a mattress and igniting it.....he later stated "I had to it, it had to be done to see things change".......those changes were about the daily issues with puttiing various refugees together from various cultures and religious sects...who believe differently in how things should be done...though they're all muslim.
If they cannot get along among their own kind of their faith...what makes people think they're going to get along with those who are not muslim?...of course they won't.