"In my experienc it is liberals who confuse the gun with the cause of killing and science with its misuse."
It appears that your defensiveness is a bit behind the curve.
"It was scientific and medical methods, scientific and medical speech that were used in carrying out these crimes in the name of science. Even today, we prefer to perceive the Nazi era as a period of 'pseudo-science.' But this is dangerous, as it would relieve scientists from any responsibility for the crimes committed. 'Criminal acts of this kind are an inexcusable shame, not only for those who prepared them, but also for all those who tolerated them, in fact for the life sciences themselves, in the name of which they were committed."
- Hubert Markl, president of The Max Planck Society.
http://www.mpg.de/english/portal/index.html
A detailed article reporting efforts by The Max Planck Society to come to terms with its own Nazi past can be found at:
http://www.nature.com/embor/journal/v2/n10/full/embor304.html
What exactly is defensive about asking you to behave like a conservative and less like a liberal?