Certain laws about land reform and property redistribution cannot be challenged in court for violating Articles 14 or 19. This was added to protect laws that help redistribute wealth and break up large estates - even if they limit some individual rights.
Laws listed in the Ninth Schedule of the Constitution are protected from being struck down for violating fundamental rights. This was a way to shield important social reform laws from legal challenges. However, the Supreme Court later ruled that even Ninth Schedule laws can be reviewed if they violate the "basic structure" of the Constitution.
Laws made to implement Directive Principles in Articles 39(b) and 39(c) - about distributing resources fairly and preventing concentration of wealth - cannot be challenged for violating Articles 14 or 19.
This article about anti-national activities was inserted by the 42nd Amendment but was later repealed by the 43rd Amendment. It no longer exists in the Constitution.