Research it all day long.
The German protests had similar protests in the United States in the 70's and 80's.
Too try and say that the Political Left in this country hasn't historically and repeatedly fought against and spoke out against U.S. military expansion globally (until about 8 years ago or so), and U.S. military expenditures in general, is intellectually disingenuous or you're just completely unaware, which is both fascinating and scary.
Which makes this New NeoCon bent all the more fascinating to observe. The apparent grave concern by the political left that Trump might try and disengage the United States from it's massive financial obligation to NATO (while some of the biggest NATO partners either barely or do not as of yet meet their 2% of GDP obligation which they committed to do years ago) is
from an historical perspective.
The United States spends 3.2% of GDP on NATO, the highest of all NATO partners.