People take part in the Easter Holy Week Parade. Easter is very important for Catholics, Christians and Orthodox Christians. The week before Easter is called "Holy Week". During the holy week, all the churches will March in the streets. The group was guided by the cross, followed by believers in various robes and long pointed masked hats. This is the standard costume for the Holy Week Parade, which began in14th century.
In the next few days, Madrid will have the densest traffic in the whole year because of the Holy Week trip. From last Friday to the end of Holy Week, it is estimated that 3 million people will migrate, accounting for 2 1% of the entire Iberian peninsula14 million population. The information comes from Spanish Chinese website. I hope it helps you, hehe.