The Home Minister said the phrase was used by a number of people in the past, including a few members of the UPA and there was a debate on ‘saffronisation of education’ in Parliament in 2001.
Precisely why using the term implies he refers to the BJP/RSS and its parivar, like the saffronisation of education was alleged against them.
PC has indeed achieved his objectives!
The Hindu : ‘Saffron terror’ served the purpose: Chidambaram