The Conservative Party allying with the DUP in order to form a government is apparently controversial as the DUP are, according to the BBC, 'socially conservative'.

According to the Labour Party and their propaganda arm, the BBC, the DUP are socially conservative and so the Conservative party shouldn't be allying with them in order to form a government.
Oddly the Labour Party had no such worries in 2010 when post the general election Gordon Brown was trying to keep his great clunking fist on the levers of power.

'Newly released emails to Hillary Clinton when she was US secretary of state show the Labour Party tried to win support from the Democratic Unionists.

In a previously confidential briefing paper, US officials said then Labour leader Gordon Brown "is doing whatever he can to hold on to power".

They said Northern Ireland secretary Shaun Woodward was involved in attempts to build support for Labour following the election.

The email read: "Shaun, for his part, is working on an economic package for Northern Ireland to win support from the DUP and other parties for Labour – a package to be proposed in the Queen's Speech."'

This is from a September 2015 article in the Irish News http://www.irishnews.com/news/2015/09/02/news/hillary-clinton-emails-labour-sought-dup-election-pact-248668

The Labour Party and the BBC are hypocrites of the highest order. That the Labour Party changes its position depending on what suits it is politics. That the BBC runs cover for them and amplifies their position is bias, pure and simple. The BBC is not unbiased, it must go.