As previously announced on Rorate, His Eminence Carlo Cardinal Caffarra offered a Messa Prelatizia in his See City of Bologna, making him the first Italian cardinal who is also the Ordinary of a diocese to publicly celebrate the Traditional Latin Mass since Summorum Pontificum came into effect (and probably since 1970 -- other Italian cardinals who have publicly offered the Usus Antiquior were either retired, or Curial cardinals). About 400 were in attendance. Messa in Latino has the pictures. Here are some of those:
Catholic Eye Candy has a selection of pictures of the April 24, 2010 Pontifical Mass in Washington DC. Two examples: