Is it legal to post video of someone's wrongdoing on social media

Two peoples A(higher cast) and B( lower cast) gets involved in verbal dispute. B made path(removes some of the stones from the property of A) to her field to take tractor . When A came to know about this , he badly scolds B ( uses bad word and disrespect her) but B made a video of wrongdoing of A and uploaded on social media and it went viral.. Public supports B .. But when A came to know about that her video went viral , she brings her brothers( one police involved) and relatives and started extorting B and blackmailed her to file FIR against her..B faces mental pressure and she said sorry to A and she literally touches A's feet ...but A and her powerful brother are still extorting her ...made a video of B touching A's feet and post on social media..Now my questions are:: 1. Is it illegal to make a path from A's property to cultivate a land(B's land)..which section of easement act deals with it))) 2. Is it illegal to make a video of someone's wrongdoing and post it on social media???..and which section of civil law deals with it???