These invaders found that Indians were very peace loving people and never wanted to fight even with the enemy. So these invaders took advantage of the fact and ruled here happily. But there were some brave people like Rana Pratap and Shivaji who gave these evil forces a tough time.
Our PM has simply said that we have to resist against these evil forces like some of our great Indian kings did. He is simply awakening the spirit of sleeping Indians.
Knowledge is power.
It is in no way represents the win of good over evil or vice versa. At one point in time, both the rulers came to the negotiating tables for the agreements but had differences, they were never fighting for good or evil or anything else but just for their own territorial sovereignty.
"It is hardest thing in the world to be good thinker without being a good self examiner"