Beyonce urges equality over North Carolina 'bathroom bill'
Beyonce has become the latest celebrity to call for equality in North Carolina, after the state stopped a law allowing transgender people to use the bathroom of the gender they identify as.
Transgender people in the US state must instead use the toilets designated for their sex at birth.
The singer posted an article about the controversial "bathroom bill" online.
She also publicised a charity which supports the rights of LGBTQ people in North Carolina.
"As The Formation World Tour makes its stop in the Tar Heel state in the midst of such a controversial time, we think it is important for us to bring attention to those who are committed to being good and carrying on the message of equality in this core of controversy," she wrote.
Her concert in North Carolina state capital Raleigh took place earlier this week and was badly affected by rain and lightning.
The audience was evacuated midway through the show, but once the weather eased Beyonce returned to the stage to complete the gig.
In the US, the laws governing which bathroom a transgender person can use are complex.
In some places they can choose whichever they feel they identify with - men's or women's. In others, they are forced to use the one that matches their biological sex.
Laws which concern the whole country sometimes oppose other laws created by individual states. Meanwhile states may also overrule local government decisions.
Other musicians such as Nick Jonas, Demi Lovato and Bruce Springsteen have cancelled gigs in North Carolina in protest of the "bathroom bill".
Companies such as Facebook, Google and Apple have all said they are unhappy with the law as it stands.
One porn site, xHamster, blocked people in the state from accessing its content in response to the legislation.
Mumford and Sons did play a gig there last month but donated all their profits to a local LGBTQ charity.
The singer of punk band Against Me is trans, but Laura Jane Grace is planning to go ahead with the gig later this month in protest.
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