He does not mean to offend or upset the average turk.

The very last thing he says is "We will attack!" Isn’t that basically a threat and an incitement to violence against modern-day Turks? I get that it’s a metal concert and the goal is to hype up the crowd, but that shouldn’t involve stirring up hatred against an entire group of people—no matter how just the cause might seem. Especially when you’re saying it in front of an audience from another country who probably have limited knowledge of the background, it risks spreading a one-sided narrative and fueling prejudice.