Atheist discrimination...Where?

In an article from The Blaze, the Freedom From Religion Foundation is financing a billboard campaign promoting atheism.  “We hope discrimination against atheists and other nonbelievers will soon be ‘gone with the wind,’” said FFRF co-president Dan Barker, my question, where is this discrimination?  Slogans such as "In God We Trust" discriminates?  Discrimination takes away something from the one discriminated, not just having opposing worldviews on display.  Besides, has Barker read a science journal lately?  Or been to a major university?  In these venues atheists have rigged the system to disallow anything remotely religious.  He needs to grow up and understand he has a personal freedom from religion, not a public one.  Living in America does not entitle anyone to a freedom from offense.