[piasa]

When did Dietrich Bonhoeffer know it was time to speak out?

At least as early in 1933, a couple days after Hitler was appointed Chancellor.

[HLPhat]

“taking Bonhoeffer seriously in our time means voting for Donald Trump.”
http://religionandpolitics.org/2016/10/18/eric-metaxas-bonhoeffer-delusions/

And Thank God somebody did but...

https://www.google.com/#q=dietrich+bonhoeffer+wall+street+holodomor

{ crickets crickets crickets }

Now we have the responsibility to put the whole dramatic mess into context.... which might be a little easier - if certain books were published, in ENGLISH.
https://www.google.com/search?q=200+years+together