They do not follow the correct teachings of Islam because they contradict the Qur’an and the Sunnah of the Prophet Muhammad, peace be upon him

see here

Shia's are not Muslims (Off) - by Bilal philips الشيعه كفار
https://www.youtube.com/watch?v=3hnIERpeFDI

الداعية الجزائري شمسي غاضباً : ماذا قدم الشيعة الرافضة للإسلام؟
https://www.youtube.com/watch?v=UL0rMsw623s