Earlier quoted context omitted.
When, in the history of humanity, has income ever been at an acceptable level of equality? If you/the people who support such a policy can't define an explicit goal then I'd say that's pretty unachievable.
The goal is defined - equality. If it mattered to you it wouldn't be a complicated concept to grasp. And just as I said in my previous comment, this is the exact sentiment that prevents the goal of equality from being reached. Just because something has never been done that doesn't mean that it can't be done. And if you and everyone who doesn't support such a policy are unwilling to participate, then you're right, it…
Our system is based on equality of opportunity, not equality of outcome. If there are issues with the opportunity then we should work to fix those (like is already being done in inner cities cleaning up the drugs/pushing out gangs/preventing fatherless homes/etc). But pretending that you're going to fix those socioeconomic issues by giving preferential treatment to people based on race is just pulling other problems into the mix and is blatantly racist.