But I have never understood being taking offense by proxy.
By taking offense by proxy, in this day and age when such people are given the time of day, it provides them with a moral high-horse to mount, to make themselves feel good and useful and give them people to look down upon and feel better than.
Of course if you lived in a previous time in history or another country, and started claiming offense at things for another group of people, you would get laughed at, maybe punched in the face for being a noob.
Its somewhat like the germans collective guilt in a way, in that, white peoples used to own slaves, and now, in this day and age of sometimes over the top liberal values, white folk can, by feeling guilty for the actions of their ancestors, can start feeling guilty, they will see something that could be (at least in the guilt ridden mind) considored offensive to any given group or religion, so they activly seek it removed, to redeem themselves in the eyes of what is right.
A good example is of british hospitals once having bibles in the beside table draw or something, when asked, muslims wernt bothered either way of their presence, yet they were removed because despite this, the unfounded guilt of history forced the people in charge of such things to see them removed.
Some peoples of other ethnic groups, though very few, can abuse this apparant guilt, and acheive what they want by pushing the crimes of white folks "grandfathers" onto their modern day counterparts.
As a personal preference, i always seem to feel the urge to slap someone upside the head when they are going totaly beyond reason with runaway PC.
Its an interesting topic of debate really, in a democracy we must find a careful balance between not descriminating, and yet the right to give offense and be offended, freedom of speech if you will.
The problem with PC ultimatly is that, it eventually leads to the same knid of sick twisted utopia that nazi germany wanted, where we are all the same and nothing or nobody offends anyone (or anything) else.
IMHO i defend the right to offend someone (outside of racism and other obviously unfair descrimination) as much as i defend the democratic right to be offended, which, as a white 20 year old male, i am ussually the butt of most of modern PC societies nudges anyway.
*Emagines a society where the only population are people who play the race card and the people who will find offense for a penguin when he see's a penguin falling over in a documentary*