MP Ian Blackford has accused the Prime Minister of “trying to take the public for fools” by defending his senior aide Dominic Cummings.The SNP's Westminster leader blasted Boris Johnson for his “breathtaking arrogance” following the UK Government’s coronavirus briefing on Sunday.Mr Blackford said the PM’s refusal to sack his adviser, who was caught visiting his parents during lockdown, would damage confidence in the UK Government.In a statement, the SNP politician said: "Boris Johnson's breathtaking arrogance sends out the message that there is one rule for the Tory government and another for the rest of us."He is trying to take the public for fools, but I have no doubt that people will see right through it."Families across all parts of the