Annually during National Library Week, the Office for Intellectual Freedom publishes a list of the most frequently challenged books in schools and libraries. In 2018, there were 347 challenges and 483 books submitted to the OIF. Of the top 11 (full list linked below), more than half of the titles were challenged for LGBTQIA+ content.
Of interest, two titles, This Day in June and Two Boys Kissing are noted as having been burned. Many of these titles have previously appeared on the top 10 (11) list from the OIF, with George appearing three times and Drama appearing four times, for example.