41.   A powerful explosion Friday night sent smoke spewing out of an underground parking lot near a central square in the Spanish capital.

42.   A stock exchange overlooks the central square in Ulan Bator, the capital, where communist stalwarts once rallied.

43.   A year after the end of the war with Russia, Chechens have begun round-the-clock construction work on the central square in their devastated city.

44.   After banning them from a central square, a heavy police force Tuesday prevented supporters of the opposition Socialist Party from staging a major protest rally outside party headquarters.

45.   Adding to the tension, truncheon-wielding police waded into a protest rally Sunday to prevent it from reaching the central square.

46.   Again restricted by riot police from marching through the streets, protesters booed and whistled at officers confining them to a central square.

47.   After the rally, the crowd marched toward the central square, throwing stones as they breached police lines ringing the stadium.

48.   Again restricted in their movements by riot police, protesters booed and whistled at the officers confining them to a central square.

49.   As calm prevailed Saturday, the armored cars and military trucks were pulled off main streets, but some remained parked in the central square and on sidestreets.

50.   At the time, dozens of boys were firing the pellets at each other in roving street battles around the central square.