Dylann Roof is the mass murderer responsible for killing nine people in June 2015, after he opened fire in a historically black South Carolina church. He is a known white supremacist who claimed his purpose was to ignite a race war with his heinous crime. Now, the 23-year-old’s younger teen sister is following in his footsteps.

Morgan Roof was arrested this Wednesday, March 14, after she brought a knife and pepper spray to school on National Walkout Day and posted a sick, racist video saying she wished students protestors would get shot, RadarOnline.com has learned.

“Your [sic] walking out for the allowed time of 17min, they are letting you do this, nothing is gonna change what tf you think it’s gonna do? I hope it’s a trap and y’all get shot we know it’s fixing to be nothing but black people walkin out anyway… no offense ofc buuut,” the 18-year-old posted on Snapchat.

NY Daily News. Meanwhile, the teen’s killer brother Dylann is on death row for his racist and fatal crime.

Stay with Radar for updates.

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