Imagine how much cheaper your rent would be if you did not have to pay for Kike Sabbath modified elevators
If they put an Eruv on your property without your permission that might be legally different than if they put an Eruv on their property
If they put an Eruv on their property and you tear it down then you would most likely be arrested if caught unless you are authorised to take it down because they violated some law possibly a safety law or maybe a home owners asssociation policy that is also a municipalor or state law and get approval to take it down by court order
But if they put it on a neighbors property who is neither them nor you then you can get in legal trouble if you cut it at the location of the neighbor's property who is neither them nor you without asking the third party neighbors permission
And the neigjbor might be a zionist
You could politely ask the neighbor to please cut the object that has intruded on their property though
