IOCC questions 9am class

How the pilgrimage works:

Modern crowd-control issues

As of 2010, about three million pilgrims participate in this annual pilgrimage.Crowd-control techniques have become critical, and because of the large numbers of people, many of the rituals have become more stylized. It is not necessary to kiss the Black Stone, but merely to point at it on each circuit around the Kaaba. Throwing pebbles was done at large pillars, which for safety reasons in 2004 were changed to long walls with catch basins below to catch the stones. The slaughter of an animal can be done either personally, or by appointing someone else to do it, and so forth. But even with the crowd control techniques, there are still many incidents during the Hajj, as pilgrims are trampled in a crush, or ramps collapse under the weight of the many visitors. Pilgrims can also go to Mecca to perform the rituals at other times of the year. This is sometimes called the "lesser pilgrimage", or Umrah. However, even if one chooses to perform the Umrah, they are still obligated to perform the Hajj at some other point in their lifetime if they have the means to do so. Total number of pilgrims in year 2012 is 3,161,573 according to Saudi Foreign Embassy

Yes, it is Wikipedia, but it is accurate and easy to understand.
Dr. Berg