@burcidi-- I think the Committee had various different arguments as to why we need to enter the war. I'm not surprised about the arguments that Germany was dangerous and barbaric and that the US needs to defend democracy against them. As far as I know, there was also an an argument that Germany would invade the US and that we needed to enter the war and attack them first.
I think this argument was what convinced most Americans about the war. My grandfather said that they were sincerely worried about a German invasion.
I actually understand why Wilson had to form this Committee and do so much propaganda. Hadn't Widrow Wilson promised that we would not enter the War during his presidential elections? I'm sure many people voted for him for this reason. But circumstances forced us to enter the War and if Wilson didn't convince Americans about it, he would have been seen as a liar.