Men in blue are on a mission to retain the city's lost glory. They are fighting tooth and nail for the security of Nairobi residents and of late, we have seen many gunned down every single day.

Well, on Friday, a young Kenyan man by the name Isaack Kamau Wangura was gunned down by a policeman along Jogoo road on the March 21 and his sister; Ruth Mumbi has spoken about the incident.

"On 21/4/17 at around 2230hrs, a senior police officer driving along Jogoo Rd was accosted by a lone gunman. He fatally injured the gunman after an altercation and recovered a pistol that was previously stolen from another officer in 2015," read a statement from Kenya Alerts

Ruth shocked social media users after she vowed to avenge the killing claiming that her younger brother's shooting was a case of extra-judicial killing and that he wasn't a notorious and most wanted thug as the police claim. Ruth Mumbi who is yet to be convinced that Kamau was a wanted criminal despite the police report that they have been looking for him for the past year.

"It's hard and painful to say RIP, to my baby brother, our beloved last born Kamau Mwangi. Your sudden death gives me another reason to stand against impunity by the rogue police and the broken systems in Kenya. I will avenge your death by making sure your sons will live in a country where human life is valued and protected. 

I commit my life to stand against the systematic profiling of Kenyan youths and especially in the Ghettos. You died while calling out my name for help.

Let your voice always whisper to me and be the strength I will need to stand against abuse and violations of human rights and especially right to life. Your humor, generosity, and smile will be greatly missed." Mumbi posted on Facebook accompanied by the photo below.

The post raised mixed reactions and here are some of the comments;

Davis: Remember even police officers are human beings....in fact, they are our bros & sisters....our own children, fathers & mothers...stop blaming anyone....this guy is well known by the public...the picture am getting is that this is a well known criminal.....na safari bado....officers whenever ur kudos...

John: I wish you committed your life to getting your brother out of crime if you really loved him. Being a keyboard Tiger does not change facts.... Your brother was a criminal and he died in the line of his chosen career..... Assist your other kin in similar situations otherwise, they will equally be wiped if not by police, by the masses they mess around with.... Plain and simple

Shiro: RIP Kamaa...Ruth Mumbi gal let it go...Let your brother rest in Peace there's no need for revenge coz clearly here the truth of Who Kamaa was cannot be told he alone has the answer....No need for fighting the Government...Poleni sana

Vincent: Rest in Peace Kamau. And congratulations to the police officer who killed this thug we are tired of them

Linet: This is the path he took n he died in the line of duty so lady just burry ur bro n let it go

Victoria: May Kama's soul rest in eternal peace we will miss him dearly for he was good n generous to us his family we will miss him dearly, just know that we are blind to u haters for us we have lost a man that we can never replace.