Can society prohibit People from entering public parks

I am associated with an NGO and we teach underprivileged students in the evening in public parks across various sector in Gurgaon. Lately many residents have complaint that teaching in "their society's park" is illegal as it hampers and destroys their parks which is a flat lie. None of our action has ever caused any damaged to the park, we simply are trying to educate slums kid so that they can have a bright future ahead and contribute to our socity in return. So, my question is, is there any provision in law which prohibits us from teaching in public parks and if yes or otherwise what step should we take to tackle this situation.