Hahaha, these christians are just hilarious!

As a matter of fact, the cross symbol, like so many other things, and the crucifixion myth were directly copied from Egyptian mythology.

Osiris, the Egyptian Saviour, was crucified in the heavens. To the Egyptian the cross was the symbol of immortality, an emblem of the Sun, and the god himself was crucified to the tree, which denoted his fructifying power. (...)Horus was also crucified in the heavens. He was represented, like...Christ Jesus, with outstretched arms in the vault of heaven."

Thomas W. Doane, Bible Myths and Their Parallels in Other Religions.

The Egyptian hieroglyph they plagiarized, Cross-ndj, when written in a sentence, means:

1. Protector, advocate, avenger.

2. Homage to thee (a form of salutation to gods).

Of course, it's a religious symbol.

The cross combines two of the most potent death symbols of all time: the Roman crucifixion cross, and the medieval sword carried by tyrants and crusaders for centuries. I don't know why anyone would stick it on top of a building or wear it around their neck. They should demolish the chapel and replace it with a secular building that everyone can use.