A month after Brazil saw widespread unrest, Pope Francis is headed to Rio de Janeiro for World Youth Day (which is actually a week long). With more than a million attendees expected, authorities aren't taking any chances. Demonstrators wore Guy Fawkes masks during June's protests; at a Mass the pope will say, masks are banned, the BBC reports. Meanwhile, 7,000 troops will keep an eye on things at that event, and people with a "hostile attitude" will be denied entry. Poster-carrying, however, will be allowed; several protests are already planned, and some 35,000 security forces will take part across the week. (Follow the event on Twitter and get to heaven faster.)