"Israel must not become one of them." Unfortunately enough for the haters, it is not one of them. Most protests, Palestinian ones included, go by without any problems. To put what I believe is the author's meaning with the finishing line in context, let's remember what China did to anywhere from a few hundred to a few thousand of its own citizens back in 1989.
Turkish military denies hitting civilians in airstrikes targeting PKK militants (Reuters)
from the article: Israel must allow Palestinians to protest in peace