From the very start of Donald Trump’s presidency, Americans have been divided along partisan lines in their views of him. But partisan divisions in U.S. politics are certainly nothing new.

Do views of Trump represent a change from how past presidents have been seen? How do changes in the country that have occurred in recent decades connect to the way the president is viewed today?

When adjusting for its large population, Chicago is by no means the nation’s “murder capital.” For decades, in fact, it has had fewer murders per capita than many other U.S. cities with smaller populations, according to FBI data going back to 1985.