Maharashtra Deputy Chief Minister Devendra Fadnavis today took on former ally, Shiv Sena (UBT) leader Uddhav Thackeray, for keeping mum on Congress removing Savarkar and Hedgewar from the school syllabus in Karnataka. The BJP's swipe at Mr Thackeray on his ideology and alliance with the grand old party comes two months after the Shiv Sena leader cautioned former Congress chief Rahul Gandhi, saying Savarkar was akin to God for them and their role model, and any insult to him will not be acceptable to his party. Demeaning Savarkar would create "cracks" in the opposition alliance, Mr Thackeray had warned.