The claim is mostly false because while a shooting at a Catholic church in Minneapolis did occur with fatalities and injuries, there is no evidence that the shooter was left-wing; Charlie Kirk was assassinated but there is no verified link between the shooter and left-wing groups; there is no credible report of a left-wing gunman shooting up ABC10 in Sacramento; and the claim about an attempted murder of ICE agents with shots hitting illegal aliens is unverified and unsupported by available sources.
In 1 month: A left-wing gunman shot up a Catholic church in Minneapolis, kiIIing 2 and injuring 19. A left-wing gunman assassinated Charlie Kirk. A left-wing gunman shot up ABC10 in Sacramento. A left-wing gunman attempted to murder ICE agents, but his shots struck illegal aliens.

Left-wing social media fanatics celebrate the death of Charlie Kirk and say he 'deserved' to be shot - Daily Mail Online
Source: dailymail.co.uk
Key Evidence
The Annunciation Catholic Church shooting caused fatalities and injuries but no confirmed political motive or affiliation.
en.wikipedia.orgen.wikipedia.orgAnnunciation Catholic Church shooting
Charlie Kirk was assassinated, but investigations found no evidence linking the shooter to left-wing groups.
nbcnews.comnbcnews.com'No evidence' found yet of ties between Charlie Kirk's shooting and left-wing...
No reports confirm any shooting at ABC10 in Sacramento by a left-wing gunman.
abc10.comabc10.comWho shot Charlie Kirk? What we know about Utah man in custody
No credible information supports the claim about an attempted murder of ICE agents with shots hitting illegal aliens.
What the Evidence Shows
The Annunciation Catholic Church shooting in Minneapolis on August 27, 2025, resulted in 2 deaths and 19 injuries during a school Mass.en.wikipedia.orgen.wikipedia.orgAnnunciation Catholic Church shooting However, none of the sources provide any information about the shooter's political affiliation or ideology, so labeling the gunman as 'left-wing' is unsubstantiated.
Charlie Kirk, a conservative activist and Trump ally, was fatally shot at Utah Valley University on September 10, 2025.latimes.comlatimes.comSuspect in Kirk shooting arrested and identified: 'We got him!' Multiple sources confirm the assassination but emphasize that federal investigations have found 'no evidence' linking the shooter to left-wing groups.
nbcnews.comnbcnews.com'No evidence' found yet of ties between Charlie Kirk's shooting and left-wing...+2 more Thus, describing the shooter as 'left-wing' is not supported by current evidence.
There are no credible reports or evidence in the provided sources about a left-wing gunman shooting up ABC10 in Sacramento. The only ABC10-related source discusses Charlie Kirk's shooting but does not mention any attack on ABC10 itself.abc10.comabc10.comWho shot Charlie Kirk? What we know about Utah man in custody
The claim that a left-wing gunman attempted to murder ICE agents but accidentally shot illegal aliens is not mentioned or supported by any of the sources. This appears to be an unverified or fabricated assertion.
Overall, while some violent incidents occurred within the stated timeframe, attributing them to 'left-wing gunmen' lacks evidentiary support except for social media reactions that are not proof of perpetrator ideology. The claim mixes verified events with unverified or false assertions.