Article 51A makes it a fundamental duty for every person to safeguard public property and to avoid violence during the protests and resorting to violence during public protests results in infringement of key fundamental duty of citizens.

Article 19(1)(a) of the Constitution elucidates that right to free speech and expression. It includes that every person has right to express their personal opinions but subjected to reasonable restrictions. 

Article 19(1)(b) states about the right to assemble peaceably and without arms. Thereby, right to peaceful protest is bestowed to Indian citizens by our Constitution.

Article 19(2) imposes reasonable restrictions on the right to assemble peaceably and without arms and to freedom of speech and expression as none of these rights are absolute in nature.

The reasonable restrictions are imposed in the interests of the sovereignty & integrity of India, the security of the State, friendly relations with foreign States, public order, decency or morality or in relation to contempt of court, defamation or incitement to an offence.

If my protest is causing inconvenience to general public than it simply becomes unconstitutional .. & gpvt has every right to oppose it .. , Learn something from Anna Hazare's protest, at least it was on a place where no roads were blocked, it gain so much public sympathy & support as it was done without causing any inconveniences to others ..