I recommend using barre chords the whole time:
Em Am B C Am/G (if you want to use it)
|-7--5--7--8 --5-|
|-6--5--7--8 --5-|
|-9--5--6--9 --5-|
|-9--7--9--10--7-|
|-7--7--9--10--7-|
|-7--5--7--8 --3-|
[Intro]
Em C B
Em C B
Em C B
Em C B
Em C B
Em C B
[Verse]
Am
We stood in front of tanks at Tiananmen Square,
B
From Berlin to Chiapas we are everywhere,
Am
And over the sirens of the police cars,
B
You can hear us shout “The streets are ours!”
[Bridge]
B Em
In Seattle we chased out the World Trade Organisation,
B Em
On Mayday we gave Winston Churchill a mohican,
B Em
Kept the water for the people in Cochabamba,
B Em
Demanded autonomy on the dawn of NAFTA,
B Em
So send in the clowns, someone send in the clowns,
B Em
The black bloc, the Antifa and the undergrounds,
B Em
A big, pink, marching samba band,
B Em
And we'll take our own route that ain't pre-planned