The US mainstream media is constantly being manipulated by many a special interest group and are also extremely sensitive to anything that may affect their bottom line (e.g. the massive display of cowardice most mainstream media outlet put on during the mohamed danish cartoon affair [1] [2])
The fact that pro-israel interest groups are playing this game as well is nothing special.
They might be playing the game a little better than others, but in general: move along, nothing to see here.
[1] https://en.wikipedia.org/wiki/Jyllands-Posten_Muhammad_carto... [2] https://www.youtube.com/watch?v=C_OR3b-97Ds