ernst & heartfield: masters of dada/collage

The impetus behind dada/collage has two forms: political and metaphysical. 

the two exponents are Max Ernst and John Heartfield.

Heartfield's hitler posters have no match in political art:

schluckt Gold und redet Blech

or,

kleiner Mann bittet um grosse Gaben

or,

Nur keine angst, er ist vegetarier!

or,

Fritz Thyssen spielt mit Adolf Hitler als Marionette

I recommend this to understand Max Ernst metaphysical collages

john heartfield's political antinazi posters