“You are the light of the world. A town built on a hill cannot be hidden. Neither do people light a lamp and put it under a bowl. Instead they put it on its stand, and it gives light to everyone in the house. In the same way, let your light shine before others, that they may see your good deeds and glorify your Father in heaven." - Matthew 5:14-16
Faith in the public square is not about praying. It's about sharing the Word and showing your faith.
Jesus was talking about those who pray to put on a show, like so many priests/preachers do.
I suggest YOU read your bible.