While I don't think people should do things to antagonize other people pointlessly(not just religions), the fact people are rioting about a book being burned is beyond moronic.
That's exactly the point they are making in burning it. sacred to you is not sacred to me. Thinking that they have any right to enforce their religious beliefs on anyone else is not okay, doing so violently reveals they are the villains.
If Islam wants to be part of modern society, they need to accept others are not religious, and some are vehemently against religion, and that those views, demonstrated in public, is their right too.
The core issue a lot of people have with Islam in particular is the belief that they must enforce Islamic law on others around them.
Because they can tell the difference between two very different things?
I don't know how assholes work where you live, but in the US some varieties of asshole would burn a US flag* if they wanted to pick a fight with people who have a reputation for giving a shit about symbols that "need to be respected."
Of course the proscribed way to dispose of a damaged or worn US flag is to burn it, but only weirdly precocious children would argue that this is relevant.
"Sit down, Billie**. That's not what we're talking about."
The kid it technically correct (but not really even that) and is also missing the much lager point. The larger point is that the act is a 'FUCK YOU,' coupled with 'what ya gonna do about it?'
*This isn't a great analogy aside from 1) destruction by fire and 2) the act of destruction being intended as a direct provocation.
**Also, Billie will grow up to become an energy vampire.
In the past months, Momika, a refugee from Iraq, has desecrated the Quran in a series of anti-Islam protests mostly in Stockholm that have caused anger in many Muslim countries. Swedish police have allowed his actions, citing freedom of speech.