A millionaire African-American businessman and his son were the victims of a virulent hate crime this week while on vacation in Florida.

Frank Davis was enjoying his Fourth of July holiday with his son, Michael, at the upscale Art Ovation Hotel in Sarasota when they discovered a note inside their room that read: 'You're a N****r.'

The incident evidently occurred after an unidentified person snuck into Davis' hotel room while he and his son were at breakfast and left the disturbing 2-by-5 post-it note on a bedside lamp, according to The New York Post.

The incident evidently occurred after an unidentified person snuck into Davis' hotel room while he and his son were at breakfast

'I was stone cold for 30 to 40 seconds when I read the note,' Michael Davis, 27, told The Post.

'My first thought was, what did we do to deserve this? We tipped well, we were beyond nice to all the staff.'

The note so unnerved the Davis family that they immediately phoned the police and the front desk of the hotel to report what happened.

The Sarasota Police Department said they are still investigating the incident while no suspects have been named.

Frank Davis (pictured) was enjoying his Fourth of July holiday with his son, Michael, at the Art Ovation Hotel in Sarasota

Frank Davis, 58, co-founder of the multi-million dollar real-estate investment company Horizon Group, said that the note left him deeply saddened.

Nevertheless, the life-long diversity advocate, who recently donated $5 million to his alma mater, Bucknell University, for a new building and for minority recruitment, took a broad view of situation.

'It is critical that we all be champions for diversity and inclusion every day,' he said.

Although the hotel, part of the Marriott chain, refunded the family's Marriott points used on the six-day trip, the Davises claimed that management refused to help them find suitable accommodations, checking into another lodging two hours away.

'The whole experience has been very awful and saddening. Despite our best efforts to be friendly, welcoming guests, someone chose to hate us simply for the color of our skin,' said Michael Davis, whose mother is from New York City.

A Marriott spokesperson said that the company has apologized to the family over the incident and that the staff at the Sarasota facility will be undergo sensitivity training.

'The matter is being actively investigated and appropriate actions will be taken,' the spokesperson said.