Are lawsuit winnings for discrimination cases taxable?

It depends on waht the award is for. If it is for lost salary/wages for example, which would have been taxable income, it most certainly would be taxable by your getting through suite. (The unreimbursed costs of that suit would become a tax deductible businesss expense).

If the award (or portion) is to compensate you for another type of loss, it will entirely dependent on that type of loss. The taxability of the reward and any reimbursements should be addrresed by your lawyer.