What do you mean by right to assembly?

Article 19 (1)(b) of the Indian Constitution guarantees to its citizens the right to assemble peaceably and without arms. Under Article 19 (3), however, the state can make any law imposing reasonable restrictions on the exercise of this right in the interest of public order, and sovereignty and integrity of India. Article 19 (1) (b) does not confer on any one a right to hold meetings in government premises. The right to assembly cannot be exercised on the property of somebody.

In India, citizens had a right to hold meetings on public streets before the Constitution, subject to the control of appropriate authority regarding the time and place of the meeting and considerations of public order.