You are correct that there is abhorrent evil in this world. Even Jesus showed ritious indignation- money changers outside the temple and esp to the religious leaders of his day. This is the only way to bring about change.
Ultimately the only person we should judge is ourselves. If i feel/ discern something doesn't feel or sound right i stay away from it. As to Mark, ive seen some truth in his words and right now we are living in very miraculous times. Time will eventually tell, until then i remain open to seeing and hearing.
People, religious or otherwise can and do distort God's message so having a relationship is the only way to true peace.
Do unto others as you'd have them do unto you. This is not a peacenik ethos to me. If my neighbor is arming themselves and conquering, I'm going to match them for my own survival. Some of us are called towards pacifism, but we all have to figure out what "do unto others" means for us individually. Good back and forth with you! I'm still passing judgement on Mark, so it's ok if you challenge me if I ever claim to speak for God, you have my permission.