It’s a grim routine, and on Monday it played out again.

Four Jewish Community Centers — in Irvine, Long Beach, Los Angeles and La Jolla — were among nearly 40 Jewish centers nationally to receive bomb threats. The calls prompted evacuations and fear and anger, but they didn’t — this time — result in loss of life or property.

Such threats are becoming common.

The Anti-Defamation League reports that since the start of this year no fewer than 122 Jewish Community Centers and other Jewish institutions in 36 states have received threats of bombing or other forms of terror. In the past month at least two Jewish cemeteries (near Philadelphia and St. Louis) were desecrated.

The threats against the local Jewish Community Centers — which often serve as schools and cultural hubs and exercise venues — are extracting a heavy emotional toll.

“There is a lot of anger in the community,” said Brian Greene, executive director of the Westside Jewish Community Center in Los Angeles, which on Monday was evacuated after a caller said a bomb would be detonated.

“Yes, they are hoaxes. But someone threatened you and your children… Just knowing that is upsetting and stressful.”

The threats against the JCCs are part of a broader rise of hate crimes nationally, a trend that has included acts and threats against Latinos, African Americans and Muslims. Since Jan. 1 four mosques have been burned around the country of which three have been ruled as arson.

Many have linked the boom in hate with the political rise of Donald Trump, who repeatedly links Muslims and undocumented Latino immigrants with terror and crime. Since his inauguration, President Trump has been criticized by some for not working forcefully enough to stop the threats.

On Tuesday, during his speech to Congress, Trump addressed the issue.

“Recent threats targeting Jewish community centers and vandalism of Jewish cemeteries, as well as last week’s shooting in Kansas City, remind us that while we may be a nation divided on policies, we are a country that stands united in condemning hate and evil in all of its very ugly forms,” he said, referring to the Feb. 22 shooting in Olathe, Kansas, that left one Indian man dead and two other men injured.

During the Kansas incident, the shooter — suspected to be a white man — shouted “Get out of my country.”

It’s unclear what effect, if any, Trump’s words will have.

“We in the Jewish community are not strangers to anti-Semitic incidents or violence, but the density and direction of this wave of threats seems unparalleled,” said Peter Levi, regional director for the Anti-Defamation League, Orange County and Long Beach.

“We’re dealing with it,” Levi added. “It hasn’t deterred us in any way from living our lives.”

Lisa Armony, a director with the Jewish Federation and Family Services of Orange County, said many in the Jewish community are expressing outrage. “They feel like the heart and soul of their institutions are being threatened.”

But Armony and others noted that the rise in hate also is creating unexpected — and welcome — alliances.

On Saturday night, Temple Beth El in Riverside will host a multi-cultural event titled “Riverside Standing Together.” The night will include prayers and affirmations from Christian, Muslim and Jewish faith leaders, to show “solidarity for one another,” said Rabbi Suzanne Singer.

“It’s not just about Jews,” she said.

“Muslims, immigrants, members of the LGBT community; those who are undocumented,” are all targets, she added.

And in St. Louis and Philadelphia — where Jewish headstones were toppled — Muslims and Jews worked together to repair the damage.

“It is heartening to see Muslims raising money to fix toppled Jewish headstones and Jewish people donating to mosques,” Singer said.

Singer said her synagogue hasn’t taken any additional steps to enhance security other than to encourage members to remain vigilant. But she has requested extra security for Saturday’s event.

“It makes us all more visible,” Singer said. “So, I am a little concerned.”

Security is critical in an age when extremism is a fact of life in most parts of the world, said Alon Stivi, a security consultant for a number of local Jewish institutions including synagogues.

That’s been particularly true locally in the wake of the threats against Jewish community centers and other acts.

Stivi said he’s been active regionally, fielding calls and offering consulting to people concerned, justifiably, that the next threat might not be a hoax.

“We can either pretend that the next bombing is not going to happen, or we can train people to identify suspicious people and objects.”

But Stivi added the commitment to security needs to be sustained after the fear from a hoax has subsided.

“When we have threats like this one, people are worried for a couple of weeks. But life goes on and they forget about it pretty quickly,” he said.

“This is not something we can afford to forget about.”

One of the targets Monday, the Merage Jewish Community Center in Irvine, has stepped up its security training for all staff over the past three months, as hate threats have been on the rise, said Dan Bernstein, the center’s chief executive.

“The plans we’ve put into place worked,” he said.

Since Monday’s threat, which sparked an evacuation, Bernstein said the center has added an extra security guard.

He also said support from the community has been overwhelming.

“We’ve received flowers, emails, phone calls of support not just from Jewish people, but from all corners of the community.”

Some of that support came from the Islamic Center of Orange County in Anaheim. The mosque sent letters this week to all Jewish institutions in Orange County.

“We’ve felt, and continue to feel, the pain with Islamaphobia on the rise,” said mosque spokeswoman Nicole Alhakawati. “So we sent (all Jewish groups in O.C.) a letter saying we know what you’re going through and we’re with you in this struggle.”

Alhakawati wants her mosque’s members to learn more about Judaism. So, she plans to take them on tours to area synagogues.

“I think there is a lot of hate out there,” she said. “But there is also a lot more love.”

Contact the writer: 714-796-7909 or dbharath@ocregister.com