Why is the Democratic Party responsible? Protesting Trump is a logical action to take if you are against him, and why shouldn't Trump have to pay the city since he is the REASON for people protesting? 

Trump supporters are too unorganized and lazy to go protest Democratic rallies. That is why you don't see large, organized protests at a Hilary or Bernie event. Trump is an open racist and has allowed and enabled closeted racists and bigots to spill from the levy and feel empowered in their hate speech. 

We didn't want him here and he knew the territory he was coming to. EPD knew they didn't want their department in the national news for a failure to secure Trump. 

I get the point you are trying to make, but logically, it falls through. Your logic is to bill protestors for protesting, which is unamerican and not very "Trump-like." These expenses are what happens when you have a powder-keg candidate. How about an apology from Trump supporters for bringing hell upon the people?