The Muslim Brotherhood was the group that assassinated Egyptian President Sadat for signing and honoring a peace treaty with Israel.
The Muslim Brotherhood was the group that, with the support of Obama and Soros, forced Egyptian President Mubarak out of office, because he maintained that peace with Israel and protected non-Muslims in Egypt from repression and violence of the fundamentalists - including the Muslim Brotherhood. They then installed the Islamist Morsi, who allowed Muslim mobs to kill and burn Christian communities across the country - until the military coup and takeover of El-Sisi.
The Muslim Brotherhood was the group where current Al-Qaeda leader (and previously Bin-Laden's 2nd in charge) Jihadi Al-Zawahiri began his Jihadi career.
To name but a few items from their terrorist resume.
Yes. And their history of this has been there from the very beginning of the organization. They ARE TERRORISTS.