If you listen carefully, there's a guitar riff that runs repeatedly throughout the chorus of The Freedom We Know. Its quite interesting, and uses the 'wah sweep' that I used in The Time Has Come (bridge), so here it is:
If it is of any help, you can see a little of my leg, which is moving the wah pedal as I play along. It is a little of a challenge because you have to alternate pick at a moderately fast pace, keep timing, depress the wah, and count the number of times you've played the riff (or just go by feeling).
Tabs (all on the G string):