Hi,
What on the sign leads you to believe the author of it is a “Christian”?  Please don't generalize from this sign that Christians are “the touchiest, most vindictive, and craziest”. There are touchy, vindictive, crazy humans of all beliefs. Some of them happen to be Christians.  Also, many of those who led the way in abolishing slavery, founding hospitals, and caring for the most vulnerable in the world have been people who follow Christ.  As a person who hopes to be following Christ myself, I would challenge Rev. Briggs to read the book of Matthew and meditate on Jesus' words to the self-righteous religious leaders in his day.