The 2013 Kellmünz (Germany) Level Crossing Collision. Poor visibility causes a car to be struck by a train at a level crossing, leading to the train derailing. 13 people are injured. A link to the full story in the comments.

Railroad lift bridge fails to open in Mobile, AL (May 6, 2023)

In January 2021, 9 people including the city governor, Rick Snyder, were indicted for the "Flint Water Crisis" that affected thousands of people and killed 12.

May 2, 1953- Comet 1 squall induced breakup near Calcutta

What about it?

Prior to the much more famous Comet 1 structural failures above the Mediterranean Sea, a more innocuous accident occurred. Nothing much was learned from this accident; it was known already, “don’t ford through a squall” but it wasn’t until Braniff Flight 250 in 1966 would the commercial aviation industry learn that institutional change was needed for squall management. The sleek beautiful retro-chic Comet 1 was climbing through a squall above the outskirts of Calcutta when the aircraft had its nose pushed into a slightly negative AoA; the pilot responded with a reflexive yank on the controls to bring the bird up. A rapid failure sequence occurred: 1. Elevator failure. 2. Violent nose over causes bilateral downward wing failure. 3. The wings fly back causing substantial damage to the empennage. The minutiae is unclear but the damage is enough to cause separation of the empennage around the aft bulkhead. 4. The husk rolls inverted and vertically impacts the ground wing level upside down. Attached is the trajectory chart of the fragmentation debris. Source: https://www.baaa-acro.com/crash/crash-de-havilland-dh106-comet-1-near-calcutta-43-killed

Oxygen tank from "Skylab" found in 1993. A miscalculation by NASA meant that debris from the ~70 ton decommissioned space station generated by its 1979 atmospheric reentry fell into the Australian Outback rather than the Indian Ocean as planned. Fortunately without killing or injuring anyone.

The 2005 Gramatneusiedl (Austria) Train Collision. A passenger train's driver approaches a red signal too fast, causing him to crash into the side of a freight train. 43 people are injured.

Crane truck overturned at construction site, 1 died 1 injured - May 16, 2023(Shinagawa, Tokyo, Japan)

Oregon Air National Guard F-15D Eagle after runway accident at Kingsley Field, Klamath Falls, 16 May 2023

Oil tanker MV Prestige sinks off the coast of Spain, 19 November 2002

The 1958 Newark Bay (NJ, USA) Train Derailment. A driver fails to obey red signals ahead of a movable bridge, causing his train to fall into the water. 48 people die. A link to the full story in the comments.

20 years ago, the former ocean liner turned cruise ship SS Norway experienced a catastrophic boiler explosion in Miami which killed 4 people