They are staging what they call a 'kiss-in' which I call a 'gross-in'. They intend on grossing out an entire segment of society which doesn't approve of their sick and twisted lifestyle. That these people actively work on going against what is acceptable and moral in the world is entirely disgusting in itself, while the act they are doing causes most to want to up-chuck.
If I saw two men or two women kissing in public as a demonstration you bet I would start ostracizing them. They deserve much, much worse...