Politics is like chess. Being in the center of the board, with mainstream positions, is a strong strategic position.
People, politicians, factions, and movements whose pieces are out on the corner of the board have three options:
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1) Stand firm on your positions, and try to change enough minds that the chess board moves towards you, until your pieces are in the center
2) Compromise on your positions and move your pieces closer to the center of the board
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3) Start moving your pawns like knights and your bishops like queens and see if you can get away with it
When a person or group is doing #3, the particulars of their stances are irrelevant. Everyone abiding by basic liberal rules should unite against the cheater.
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Cheaters only have power to do damage when A) people stop noticing the difference between playing by the rules and cheating, and/or B) people become so caught up in the game they start thinking, "the enemy of my enemy is my friend, even if that friend is cheating."
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