Please answer a question about the following article about Josip Broz Tito:

In the years following the dissolution of Yugoslavia, some historians stated that human rights were suppressed in Yugoslavia under Tito, particularly in the first decade up until the Tito-Stalin split. On 4 October 2011, the Slovenian Constitutional Court found a 2009 naming of a street in Ljubljana after Tito to be unconstitutional. While several public areas in Slovenia (named during the Yugoslav period) do already bear Tito's name, on the issue of renaming an additional street the court ruled that:

Under which ruler do historians argue human rights were suppressed in Yugoslavia?
Tito