Freedom of Speech/ Belgium constitutional referendum

This is a fascinating article to follow up my comments earlier this week.
Please note the reason awhy people should not be allowed to decide about the Constitution of their own country,

Elio Di Rupo, leader of the French-speaking Socialists, said some parties might abuse the referendum to campaign against Turkey's EU bid or to further split linguistically divided Belgium.
"I fear some would use this fantastic debate which the referendum would create to launch xenophobic or purely racist remarks."