This is a man who literally, and almost single handedly organized a volunteer army, which included a significant number of native americans, and took them to war against the vestiges of a european colonial power (Spain).
Roosevelt was a great and exceptional man, and a leader others followed willingly, often at great risk to themselves, and other than maybe Martin Luther King, or George Patton, he's probably the best political leader America has ever produced. (I recommend his book on the Rough Riders) His original involvemnent in politics was as a crusader against corruption, and he used his wealth for the one thing it should afford, which is to be able to stand by his principles.
People are welcome to do what they want with their cities, but in removing this statue, it will become like all banned art, a symbol of the pettiness and contemptibility of the regime that removed it, and of the individual human greatness they fear most.