Another NFL player has been targeted in a disgusting racist incident.

A few days after New York Giants fullback Nikita Whitlock’s home was vandalized with a swastika, the letters “KKK,” the words “Go Back To Africa” and president-elect Donald Trump’s name, Denver Broncos linebacker Brandon Marshall revealed on Instagram an extremely offensive letter he received.

You can see what the person wrote below — as well as Marshall’s accompanying message — but it comes with a strong warning.

WARNING: The letter Marshall received contains extrememly racist and explicit language.

The Broncos are investigating the situation, according to ESPN.

Marshall has drawn the ire of some for joining Colin Kaepernick’s national anthem protest by kneeling during the “Star-Spangled Banner” for the first eight games of the season. He stopped kneeling midway through the season, saying at the time that he’s “encouraged with the many productive discussions and progress that has taken place” but “there’s much work to be done.”

Several NFL teams join Colin Kaepernick’s anthem protest >>

Thumbnail photo via Ron Chenoy/USA TODAY Sports Images