[MinorityRepublican]

It’s not just a Christian symbol but it’s a national symbol. Look at the flag of England.

[Jack Hydrazine]

It’s a Christian symbol adopted into English heraldry.

[DiogenesLamp]

It's not just a Christian symbol but it's a national symbol. Look at the flag of England.

And Scotland.

And Switzerland.

And Norway.

And Sweden.

And Greece. Etc.

Here's a few examples.