It sounds to me like Nick Clegg hadn't actually seen the pictures, and was trying to improvise an answer based on not offending anyone.
To be honest, anyone who saw those pictures, really looked at them properly. and didn't know it was domestic violence IMO is a fucking misogynist.
So I hope he just didn't see them. I'd rather he was a twattish politician, making up 'the right answer' despite not knowing arse all about it, than a DV apologist.