Section 153A in The Indian Penal Code deals with Promoting enmity between different groups on grounds of religion, race, place of birth, residence, language, etc., and doing acts prejudicial to maintenance of harmony. That is ; Whoever by words, either spoken or written, or by signs or by visible representations or otherwise, promotes or attempts to promote, on grounds of religion, race, place of birth, residence, language, caste or community or any other ground whatsoever, disharmony or feelings of enmity, hatred or ill-will between different religious, racial, language or regional groups or castes or communities or commits any act which is prejudicial to the maintenance of harmony between different religious, racial, language or regional groups or castes or communities, and which disturbs or is likely to disturb the public tranquillity Here are the conditions under which an FIR can be quashed: 1 Where the allegations made in the first information report or the complaint, even if they are taken at their face value and accepted in their entirety do not prima facie constitute any offence or make out a case against the accused. 2 Where the allegations in the first information report and other materials, if any, accompanying the FIR do not disclose a cognizable offence, justifying an investigation by police officers under Sec.156(1) of the Code except under an order of a Magistrate within the purview of Sec.155(2) of the Code. 3 Where the uncontroverted allegations made in the FIR or complaint and the evidence collected in support of the same do not disclose the commission of any offence and make out a case against the accused. 4 Where, the allegations in the FIR do not constitute a cognizable offence but constitute only a non-cognizable offence, no investigation is permitted by a police officer without an order of a Magistrate as contemplated under Sec. 155 (2) of the Code. 5 Where the allegations made in the FIR or complaint are so absurd and inherently improbable on the basis of which no prudent person can ever reach a just conclusion that there is sufficient ground for proceeding against the accused. 6 Where there is an express legal bar engrafted in any of the provisions of the Code or the concerned Act (under which a criminal proceeding is instituted) to the institution and continuance of the proceedings and/or where there is a specific provision in the Code or the concerned Act, providing efficacious redress for the grievance of the aggrieved party. 7 Where a criminal proceeding is manifestly attended with mala fide and/or where the proceeding is maliciously instituted with an ulterior motive for wreaking vengeance on the accused and with a view to spite him due to private and personal grudge. For defamation: Send a legal notice to them and file a defamation suit in Judicial first class magistrate court. You can claim damages by filing civil suit.For your business you can seek police protection from high court.