Wal-Mart, in which the Supreme Court must decide whether lawyers can maintain a class on behalf of 1 million female employees of Wal-Mart who they say all suffered some measure of discrimination in pay and promotion.

FORBES: Class-Action Foes Have Trifecta Before Supreme Court

In that case plaintiffs created a class of more than 1 million female Wal-Mart employees who theoretically all suffered some measure of job discrimination.

FORBES: Judge's Dissent In Rio Tinto Case Slams Alien-Tort Claims

Opponents of the measure complain that it usurps the power of states to regulate family law and enshrines discrimination against homosexuals into the Constitution.

CNN: Senate debates same-sex marriage

Nicholas Economides, of New York University, says that when firms have a measure of market power, they can engage in price discrimination, charging different prices to different customers.

ECONOMIST: Economics focus

That will not come without a political solution, giving some measure of autonomy to the island's Tamils who have suffered discrimination from the Sinhalese majority more or less since independence.

ECONOMIST: The army thinks it can win. It is wrong

When Mississippi Gov. Phil Bryant signed the state's voter photo identification measure into law this month, the move harkened back to the type of discrimination Simmons' grandmother and others faced during the tumultuous civil rights era, the state legislator said.

CNN: STORY HIGHLIGHTS

She said she would work to pass a federal law outlawing employment discrimination based on sexual orientation and propose another measure extending benefits to the partners of federal employees.

CNN: Sen. Clinton dodges question on gays, immorality

But critics worry that the measure will result in privacy violations and even discrimination, allowing airlines to charge certain kinds of passengers, such as business travellers, more than other passengers, potentially without their knowledge.

BBC: How airline pricing works