VICTORIA WALDERSEE and CATARINA DEMONY EUROPE’S top human rights group yesterday told Portugal to do more to confront its colonial past and role in the transatlantic slave trade in order to help fight racism and discrimination in the country today. The comments by the Council of Europe come as debate in Portugal over how to remember its history heated up in recent months as the country prepares to unveil its first memorial to victims of slavery, in Lisbon. The memorial - rows of sugar cane painted in black - was designed by Angolan artist Kiluanji Kia Henda and funded by…