Demi Lovato attacks Americans for lack of world knowledge

Demi Lovato has attacked her fellow Americans on Twitter, accusing them of being more interested in celebrity gossip than important global issues.

Just two days after the pop star returned to social media following a brief boycott, she let followers know exactly what she thinks of the state of America, beginning with the statement: "The world is weird".

"I bet our country knows more about celebrities than they know about what's happening over seas or global warming," she ranted on Twitter. "We complain about how unfair paparazzi and tabloid rumours are but still buy the magazines to find out who's f**king who and who wore it best."

The 23-year-old, who recently split from longtime boyfriend Wilmer Valderrama, then offered up a quirky poll to prove her point, asking her followers: "How many people can name someone on the FBI's top 10 most wanted list?"

Demi then listed a series of multiple choice answers, including "Can name 1 or more", and "Can name all Biebers exes (sic)".

The Cool For the Summer singer concluded her rant by asking: "Is it our fault though? Has society fed into it or is this just easy business with everyone from blogs to magazines trying to cash in? Who's fault is it that teens can name more celebrity feuds than wars?"

Demi's recent social media break was prompted by vile backlash from angry Mariah Carey fans, who were defending their idol after the young star criticised her on Instagram, suggesting Ariana Grande was a better singer.

She later explained her remarks by criticising Mariah for the way she treats people.

"Mariah is a legend and is so talented but constantly disses people," she wrote in an Instagram comment.