This webpage provides data and statistics on hate crimes in the United States in 2017. The document "Uniform Crime Reporting Statistics: Their Proper Use" describes the source and purpose of the data: "Since 1930, participating local, county, state, tribal, and federal law enforcement agencies have voluntarily provided the nation with a reliable set of crime statistics through the Uniform Crime Reporting (UCR) Program. The FBI, which administers the program, periodically releases the crime statistics to the public." A link to this document is provided on the webpage, along with links to several relevant reports and databases.
U.S. Federal Bureau of Investigation: https://ucr.fbi.gov/