On November 20, the official Twitter account of the Tokyo Immigration Bureau sparked an online discussion after pinning a tweet to its Twitter profile featuring graffiti on a bridge in central Tokyo. Although the tweet was intended to speak out against graffiti, what actually caught netizen interest was the message of the graffiti itself. The words read “Free Refugees”, which many understood as tacit criticism of how the official immigration body treats refugees, undocumented workers, and others in detention.
The pinned tweet by the Tokyo Immigration Bureau includes three photos of graffiti written on the bridge with the words “FREE REFUGEES”, along with a message imploring everyone to “stop making graffiti” (落書きは止めましょう):
少しひどくはないですか。。。 pic.twitter.com/eHVO1f37jR 
— 東京入国管理局 (@IMMI_TOKYO) November 20, 2018 
Let's all stop making graffiti.
Found early in the morning on November 19, on the Konan Bridget. While freedom of expression is extremely important, this is public property.
Doesn't this just make you a little sad?
An accidental criticism
Until November 20, the Tokyo Immigration Bureau Twitter account  typically posted anodyne tweets about office hours which generally receive few replies or retweets. However, the pinned tweet on November 20 about refugee graffiti on Tokyo's Konan Bridge received an outsized response, generating nearly 2,000 comments so far.
Japan accepts very few refugees and asylum seekers each year. In 2017, Japan granted refugee status to just 20  out of 19,629 applicants. Asylum seekers are often detained or separated from their families while awaiting a decision about their status.
Criticism of Japan's policy towards immigration detainees is nothing new. Since 2006, fourteen inmates  have died in Japanese immigration detention facilities which add up to about one person per year on average. Four of the most recent deaths have been suicides . The focal point for protests by Japanese human rights activists has centered around the East Japan Immigration Center in Ushiku, Ibaraki prefecture because of the high rates of detainee death .
The Tokyo Immigration Bureau also gained notoriety in October for participating in a television program  that turned migrant raids and deportations into entertainment.
Many of the replies to the recent tweets pointed out that the graffiti was imploring the Tokyo Immigration Bureau to actually free refugees, visa-overstayers, and detainees from brutal conditions. Others criticized a Tokyo Immigration Bureau that too often mistreats  and indefinitely detains  refugee claimants and detainees:
— Kang/コーヒーおかわり (@fire_ree) November 20, 2018 
You can always erase graffiti and return things to normal, but a life lost can never come back.
— @fire_ree November 20, 2018 
In a tweet  shared hundreds of times, Nagoya-based scholar Hibi Yoshitaka  called out the Tokyo Immigration Bureau for seemingly criticizing graffiti that in turn criticized the bureau's terrible track record on human rights:
— 日比嘉高 (@yshibi) November 20, 2018 
Just seeing this again made me so angry I retweeted (Tokyo Immigration Bureau). There is no way whoever controls the Tokyo Immigration Bureau Twitter account can be unaware of inhuman acts committed against immigration detainees.
Cloaking their true intentions and pretending to self-righteously tut-tut graffiti, even going so far as to pin the tweet to their profile page. Of course graffiti is wrong, but what about the abuse of detainees?
— Hibi Yoshitaka (@yshibi) November 20, 2018 
In his subsequent Twitter thread , Hibi went on to share a link to a variety of books and articles that explained the dire conditions for immigration detainees in Japan, including a November 5, 2018 Tokyo Shimbun article  that details how 17 detainees were detained in a cell meant for 6 for 24 hours at an Osaka immigration detention facility.
Hibi also shared an article by a news organization in Nagano prefecture  that explained how Japan's immigration authorities are increasingly resorting to more punitive measures such as long-term confinement to control detainees, and that the practice of detaining visa-overstayers is unofficially intended to act as a deterrent to others.
Another popular reply to the Tokyo Immigration Bureau's pinned tweet includes a link to a May 2018 news article by journalist Shiba Rei  that describes conditions for Turkish-Kurd refugee claimants  in detention in Japan:
独房に監禁、医療受けさせず死亡、腐った給食―難民虐待の東京入国管理局(志葉玲) – Y!ニュース https://t.co/Syn5XKule4 
— hika_ri (@BioreUV1) November 20, 2018 
Is the Tokyo Immigration Bureau completed oblivious to protests about its violation of human rights? While graffiti is wrong, it's important to recognize a violent (immigration system) that results in suicide.
Yahoo! News article title: “Solitary confinement, lack of medical care resulting in death, and rotten food: how Tokyo Immigration Bureau attacks refugee (claimants)
Japan intends to dramatically increase  the number of temporary foreign trainees in the coming years. However, since these trainees work for reduced wages, often in precarious conditions, many will likely be tempted to flee their jobs  and work under the table, violating the terms of their visa.
This means many more people will likely be trapped in Japan's immigration detention system — detained for long periods of time and possibly risking death.