Who in the whole Islamic nation has even the slightest disrespect let alone enmity with Hazrat Ali (R.A)?? No matter which sect you belong to, Hazrat Ali (R.A) is one of the most respected and Honored Sahaba (R.A) being one of the bravest, most loyal and most trusted companions of Hazrat Muhammad (S.A.W). Apart from being His Son in Law, was was amongst the first to accept Islam and one of the Ashra-e-Mubashra.
I wouldn't say much about who is trying to sabotage Pakistan by trying to flame sectarianism but in the words of an Indian Army Chief (I don't know the current one or any previous) that in order to destroy Pakistan India needs to flame the sectarianism......Hence.....