The Sandy Hook school shooting occurred at this location at this time. Does this imply no-one died at Sandy Hook?
No, Snopes already addressed this rumor:
As it turns out, a recordkeeping anomaly of sorts is at the root of the FBI report’s dissonant statistics for the Sandy Hook massacre. If you followed news of the incident at the time, you may recall that Connecticut State Police (not local city or town police) managed the crime scene in the hours, days, and weeks after the event in Newtown. Accordingly, the Sandy Hook Elementary victims were included in Connecticut’s statewide records, but they were not tallied as crimes of any description in Newtown in 2012. Rather, the deaths were classified under “State Police Misc.” in separate records.
Although the state’s murder total was 146 that year, only 110 of those deaths were assigned to specific local jurisdictions in the FBI report. The statewide tally of 146 includes the 27 victims of the Sandy Hook massacre.
And that matches up with the description of the data. If you look at the methodology section on the relevant FBI page, the table only includes data from city and town law enforcement, not state:
The data used in creating this table were from all city and town law enforcement agencies submitting 12 months of complete offense data for 2012.