Show them the neglected conservative flick The Wild Geese with Roger Moore, Richard Burton, and Richard Harris.
A collection of truly free-market soldiers (mercenaries) blow the hell out of Communist, Cuban-aided Africans, to rescue a democratic African leader. True, the bad guy is a wealthy investor, as your liberal friend will undoubtedly point out to you, but you can say, "Yeah, you're right; he reminds me of George Soros."

Psalms 118:8 It is better to trust in the LORD than to put confidence in man.
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Scarlet Chord Ministries   Isa 1:18