Could someone explain to me how the Taliban is following Islam and it's faith?

I'm finding hard to believe that Muslims are not terrorists when most of the people in Afghanistan support the Taliban and their ways. Just seeing the Taliban going back to their sick religion of Islam.

I have always been told that Islam is a religion of Peace but can't find anything remotely peaceful about Islam and the Taliban followers who enact the Quran and it's belief system.
Could someone explain to me how the Taliban is following Islam and it's faith?
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