Unholy water?!

What is unholy water?  Is it water cursed by the devil or what?  What are atheists doing messing with Satanic curses if they do not believe in any higher power?  This situation in Florida of unholy water on the highway making it unholy is absurd.    First of all it is not water holy or unholy that makes the difference, but the whether the people traveling on this highway are holy or not.  We need to be born of the Holy Spirit in order to become truly holy.  The Holy Spirit will live in our hearts if we ask for His presence.These atheists seemingly believe in a higher power being they most likely intoned a higher power to curse this water.  This would indeed make this higher power their god.