A social media platform can display a content item specifically targeted to a user by a targeting algorithm. The content item can display a graphic icon next to the content item. The user can select the graphic icon and provide input to the social media platform. For example, the user can log in a third-party platform, which can transmit certain data to the social media platform. Using the transmitted data, a de-targeting algorithm can block the content item. The de-targeting algorithm can also block unwanted content items in the future.