Jane Merrick is a British political journalist and former political editor of the Independent on Sunday newspaper. The opinions expressed in this commentary are hers.

(CNN) With the Democrats taking control of the House of Representatives, Donald Trump gained a glimpse of what it's like to lose some -- albeit only some -- power.

And, when bullies think they're losing control, they lash out in anger.

The President's reaction to tough questions from CNN's Jim Acosta about the Republican campaign and his immigration "invasion" rhetoric was classic bullying behavior: calling the chief White House correspondent a "rude, terrible person" shows how rattled Trump is about the results.

Just because the President's outburst on Wednesday was in keeping with his portrayal of the media as "enemies of the people" does not mean it should be tolerated.

Trump's decision to revoke Acosta's pass to the White House grounds is an outrageous ramping up of his campaign against a questioning, robust. free media.

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