Shaykh ’Ubayd Ibn ’Abdullaah al-Jaabiree – hafidhahullaah :
''The basic principle according to Ahlus-Sunnah is harshness, severe reproach and crudeness against innovations and their people. And that occurs when you are in a position of power. So in this condition, they (i.e. Ahlus-Sunnah) must not show any honour to the innovator. Rather, they must humiliate, demean and scorn their affair. So the basic principle concerning this is found in the text, the biographies of the Salafus-Saalih and the ijmaa’, and it is…”
[ From the cassette tape entitled, ad-Dawaabit lit-Ta’aamul ma’a Ahlis-Sunnah wa Ahlil-Baatil, which is available from Ibn Rajab Recordings in al-Madeenah, Saudi Arabia. ]
Source: http://www.fatwaislam.com/fis/index.cfm?scn=fd&ID=636