You're saying those photos are real? Don't 'insult my intelligence'. [=don't treat me as though I am stupid; don't expect me to believe those photos are real]
Most people were forced to work longer hours each week, and to 'add insult to injury', the company decided not to give pay raises.
They're understandably 'insulted' when no one asks for their opinion on a matter that affects them so much.
(..) Well, guess what! Now it's my turn! So you just shut up and pay attention! You are mean to me. You insult me and you don't appreciate anything that I do! You're always pushing me around or pushing me away. Oh, yeah? Well, if I treated you so bad, how come you came back? (..)2001 Shrek