If ones wife mentally tortures her husband & her in-laws and one is keeping quite for the sake of child & social implications. Now how one should move??

I think a little more information is needed to answer your question. By social implications, do you mean that it is socially unacceptable for you (or the husband) to leave his wife because of the emotional abuse? Do you live in a country where this is unacceptable by social standards, in that it would be seen as an act of an unmanly behaviour? Has any law enforcement been involved? Would the children be taken with you (or the husband) from their mother? Are there any court proceedings in process? There are too many details to consider.

I think it was Dear Abby (or Ann Landers) who had this measuring stick. Ask yourself if you are better off with or without your partner. The answer will tell you what to do.