In a democracy there are ways to protest and ways not to protest. It's one thing to gather large numbers of people, obtain the proper permit and stage a public demonstration. Such things should be allowed in an open and free society. Unfortunately some people, swelled with feelings of righteousness or indignation, feel that these rules, which balance the right for public demonstrations with the need for public safety, don't apply to their cause. We saw this recently as Tamils in major cities around the world desperately demonstrated as their mini-state collapsed.
And so it goes with the Chareidi population of Yerushalayim every time something happens that they disagree with. This time is was a public parking lot that was opened on Shabbos. Previously it's been bus shelters with immodest ads, the to'evah parade, and traffic on Rechov Bar Ilan, amongst other minor issues. It seems the standard response for the residents of Meah Shearim to anything they don't like is to descend into barbarity. In order to preserve the holiness of Yerushalayim, they are prepared to fill its streets with dirty diapers and burning garbage cans.
Not being a Talmudic scholar of the highest order, I cannot understand how such things enhance us in the eyes of the non-religious population, much less the nations of the world. It also escapes me how such behaviour enhances the holiness they are fighting to protect.
It's one thing to demand that Yerushalayim observe Shabbos as much as possible. As citizens of the country they have that right. Perhaps a more effective method would be to line people up and down the street leading to the lot silently holding placards reminding people of the concept of Shabbos in the first place.
Rioting and ranting like spoiled children accomplished only negative outcomes.