In a move decried by women’s health advocates, the cancer group Susan G. Komen for the Cure is cutting off funding to Planned Parenthood for breast cancer screenings and other educational programs. Komen, which gave Planned Parenthood around $700,000 last year, will halt financing for 19 of the women’s health organization’s affiliates. The Komen foundation said the move is in response to an internal rule prohibiting giving to organizations under investigation. (Planned Parenthood is being investigated by conservative activists in several states, most notably Florida.) Critics, including Planned Parenthood leadership, said the group was caving in to long-standing pressure from right-wing activists to break ties with Planned Parenthood over its support for abortion.