riders

Motorcyclists take part in a protest against the Yemeni Government's decision to begin enforcing a long-standing motorbike ban, Sana a, Yemen, 23 October 2014. Reports state that amid increased insecurity resulting from a Houthi take over of the Yemeni capital 21 September and a string of attacks and assasinations carried out on senior army and security officials primarily utilising motorcylces as a form of transport the Yemeni Government has taken the decision to resume enforcing a ban on motorbikes.

Yahya Arhab/EPA

Motorcyclists take part in a protest against the Yemeni Government’s decision to begin enforcing a long-standing motorbike ban, Sanaa, Yemen

Runners and riders in the parade ring before the Albany Stakes during Day Four of the 2014 Royal Ascot Meeting at Ascot Racecourse, Berkshire

David Davies/PA

Runners and riders in the parade ring before the Albany Stakes during Day Four of the 2014 Royal Ascot Meeting at Ascot Racecourse, Berkshire

Team Cannondale leads the chase of the first pack for their sprinter Peter Sagan of Slovakia, last in line in the best sprinter's green jersey, during the seventh stage of the Tour de France cycling race over 205.5 kilometers (128.5 miles) with start in Montpellier and finish in Albi, southern France, Friday July 5, 2013. Center is Daryl Impey of South Africa, wearing the overall leader's yellow jersey.

Christophe Ena/AP

Team Cannondale leads the chase of the first pack for their sprinter Peter Sagan of Slovakia, last in line in the best sprinter’s green jersey, during the seventh stage of the Tour de France cycling race over 205.5 kilometers (128.5 miles) with start in Montpellier and finish in Albi, southern France. Centre is Daryl Impey of South Africa, wearing the overall leader’s yellow jersey.

Relatives embrace each other as they race on horses through a cheering crowd during the traditional Fiesta of San Joan (Saint John) in downtown Ciutadella, on the Spanish Balearic Island of Menorca, June 24, 2013. The riders of the horses are the representatives of ancient Ciutadella society - nobility, clergy, craftsmen and farmers.

Enrique Calvo/Reuters

Relatives embrace each other as they race on horses through a cheering crowd during the traditional Fiesta of Sant Joan in downtown Ciutadella, on the Spanish Balearic island of Menorca. The riders of the horses are the representatives of ancient Ciutadella society – nobility, clergy, craftsmen and farmers.