Police Raids

One of my friends (journalist) was arrested last Friday by the police on his way back from work in Lagos. His offence was that he boarded a commercial motorcycle after 10pm. He was not only arrested, he was assaulted and had his ID card seized by the policemen.
Fortunately, he was able to send me a text before they seized his phones. I got to the stattion and was informed i cant see him until after some hours. I called some top cops and they promised to intervene so i had to wait patiently for over 5 hours with another friend/colleague (Ugochukwu Emezue of Silverbird television)who had come to lend me support to seek bail for our detained colleague.
Help finally came when the super cop arrived to order his bail. I sought to know my colleague's offence and i was told he was arrested during a raid on a blackspot. I was confused and asked my colleague why he had to visit a criminals den at night but he denied all the police said and narrated how they were indiscriminately arresting people on the streets and laying false claims.
I confronted the policemen with my colleague's version of the story and all they could say was that they were doing their job and one of them asked 'wetin him dey do outside for past 10pm?
Is it now an offence to get home late from work? What if my coleague did not send me a text? What is the fate of others arrested with him who have no one to make a case for their bail?
I was also greatly disappointed at the rate which policemen at Ojodu police station, Lagos, were openly collecting bribe money from relatives of suspects.