Ah, so this was a pathetic attempt at a "rhetorical" question.  Problem is it also constitutes the logical fallacy of false equivalency.  The flag to which you allude stood for suppressing the rights of black folks.  The "advancement" part of the title you're whining about represents rightful desire and striving to throw off the yoke of said suppression.

It also represents the reality that for most of our nation's history there were state-sanctioned social and legal BARRIERS to black folks advancing beyond their suppressed status which were backed by--likewise state-sanctioned--violence.  You can delude yourself these no longer exist because for you they have NEVER existed.  But for some Americans they still do--just not as upfront as when I was a kid.

As for what "offends" black folks, doubt you associate closely enough with any to have the slightest idea what they find "offensive".  That much is obvious from your posts.