What do liberals really mean by "tolerance"

As seen at a store in Greenville, NC (via the always excellent Legal Insurrection):

Conclusion: tolerance = mocking people who go to church.

PREVIOUSLY on liberals and their peculiar concept of "tolerance":
•Tammy Bruce exposes the myth of liberal "tolerance"
•"Tolerance" means ending free speech
•NY Times discovers the intolerant left
•Obama sees Republicans as "intolerant."
•Liberal tolerance and diversity
•Tolerance means "do nothing which I might find offensive."
•Does "tolerance" mean "agree with us or we'll kill you"?