Spurs currently find themselves sitting in eighth place in the Premier League table with three games remaining following Sunday's north London derby victory over Arsenal.
Bruce said: "Look, if he can get a bit of stick then what chance have we all got? He's a serial winner. He's managed some of the biggest and best clubs in the world and won, and yet still people doubt him.
"That's the industry we live in now. I find it remarkable. I've always got on OK with him and I've got the hugest respect for what he's done and what he's achieved. All we do now is blow holes in him. I can't understand it.
"Since he's arrived, the 'Special One', in my opinion, has always been special and lit the Premier League up over the years. I have huge admiration for what he has done and achieved and we shouldn't forget that."