There are
anti-smoking, education, science/math or anti-discrimination
ads, too. I think it would be safe to show these ads.
Even in this "safe" group there could be difficulties. Surely, there
must be some smokers in the membership. Others may have problems with
the role of commercial enterprises in education. The gay marriage issue
has two sides that look at discrimination in very different issues.
Still others might have problems with the role of government in
education, or even simply the absence of commercial enterprises in
education. Many issues are much stickier than most people realize.
--
Chad