How can placing something you don't believe in "spoil" your sacred circle? Do you find the Cross "dirty?" If not, simply removing it will take away all that disturbs you, unless there's more to the Cross than you're willing to admit.
Also, who said Christians "hate" pagans? Read the Christian Bible; Christians are called to love.
However, there are many who profess to be Christians but fail to behave "Christ-like."
On this, I direct you to the book of Galatians. If you read it you will learn about the fruits of the spirit. "You will know them by their fruit." Just because someone stands in a garage, that doesn't make them a 1953 Studebaker.
The cross was a symbol of the crusades. A symbol of death to those who didn’t worship the word of the Roman church. (and sometimes to those who did) to many nordic pagans, its a reminder of times when people acting in the name of christ would burn people tied to oak trees, or would pour burning lead into their mouths, or force snakes down their throats.
I have no problem with it being everywhere else, but why does it have to be in our place too? Does your religion mandate that you must HARASS everyone who is not part of your faith?