Still easier would be a multiple bomb attack against pubs where people are watching events".
Previous atrocities in the city, including multiple bomb blasts on its railway in 2006 that killed 180 people, were indiscriminate.
While Islamist militants have claimed responsibility for multiple bomb attacks in northern Algeria, the south of the country has largely been spared the violence.
Ndi Kato, an activist from Kaduna State which has suffered multiple bomb blasts this year, described the Nigerian reaction this weekend as "internet sadness", a superficial kind of solidarity that doesn't meaningfully extend offline.
Meanwhile, Egyptians celebrated the first anniversary of the protests that led to Hosni Mubarak's departure from power.Around 200 people died in multiple bomb attacks over a single day in the northern Nigerian city of Kano.
In one of the most dramatic elections of the post-Franco era, voters turned on the ruling party, convinced that the multiple bomb attack on Madrid's packed commuter trains had been carried out by al-Qaida and with a growing sense that the People's party had tried to hide the truth.
