Eight days after a gunman with an AR-15 rifle killed 17 people at a high school in Parkland, Fla., a major bank cut ties with the National Rifle Association.
The bank, the First National Bank of Omaha, was among the first businesses of at least a dozen to scrap special rates or discounts to the five million people the N.R.A. says it has as members.
Supporters and detractors of the N.R.A. have butted heads over the issue on social media, calling on partner companies to either stay put or step away, essentially leaving them with no neutral ground.
Of those companies that did cut ties, many said they did it in response to consumer complaints.
In a statement on Saturday, the N.R.A. said the companies, “in a shameful display of political and civic cowardice,” were trying to punish its law-abiding members who had nothing to do with the Parkland shooting.
The statement added: “In time, these brands will be replaced by others who recognize that patriotism and determined commitment to Constitutional freedoms are characteristics of a marketplace they very much want to serve.”
Kevin C. Langin, a spokesman for the First National Bank of Omaha, said in a statement on Thursday that customer feedback had prompted a review of its contract with the N.R.A. “As a result, First National Bank of Omaha will not renew its contract with the National Rifle Association to issue the N.R.A. Visa Card,” the statement said.
On Saturday, Delta Air Lines said on Twitter that it was ending its contract with the association for discounted rates through the airline’s group travel program. “We will be requesting that the NRA remove our information from their website,” the company said.
United Airlines tweeted a similar message two hours later.
Two moving van companies wrote on Twitter on Friday they were severing ties with the N.R.A. Allied Van Lines and North American Van Lines, which share a parent company, Sirva, each said it “no longer has an affiliate relationship with the NRA effective immediately,” and had asked to be removed from its website.
A spokesman for Avis Budget Group, which owns the car-rental companies Avis and Budget, said on Friday a discount partnership with the N.R.A. would end by March 26.
Hertz said Friday that it was ending its rental car discount program for N.R.A. members.
On Thursday, the car rental companies Alamo, Enterprise and National, which share the parent company Enterprise Holdings, tweeted they would end their discount for N.R.A. members beginning March 26.
MetLife said in a tweet on Friday it was ending a discount program for N.R.A. members.
Also on Friday, a spokesman for the insurance company Chubb told Reuters it would no longer have a partnership with the N.R.A. on an insurance program called the “NRA Carry Guard.” The spokesman said Chubb had given notice of this change three months ago.
TrueCar, an automobile pricing and information website, said on Friday it was “ending its car buying service relationship” with the N.R.A. at the end of this month.
The home security company SimpliSafe once offered two months of free monitoring for N.R.A. members but the company said in an email on Saturday that it had “discontinued our existing relationship with the NRA.”
The cybersecurity company Symantec announced on Twitter on Friday that it had ended a discount program with the N.R.A.