Hey there from CNN. I'm Krista Bo with the five things you need to know for Thursday, May 2nd.

There's the right to protest, but not the right to cause chaos.

'Tensions are high on college campuses across the US, as more than 1,800 people have been arrested in connection with pro-Palestinian protests. President Joe Biden took to the podium today from the white House to extensively address the issue for the first time. The campus protests started roughly two weeks ago to condemn Israel's war in Gaza and to demand the universities cut financial ties to the country. The president acknowledged the right to free speech and the right to protest, but said dissent must not lead to disorder.

I understand people have strong feelings and deep convictions in America. We respect the right and protect the right for them to express that. But it doesn't mean anything goes. It needs to be done without violence, without destruction, without hate, and within the law.

He also dismissed the idea of supporting sending the National Guard to quell protests on campuses, as some Republicans have suggested state governors do. And he added that the US's support for Israel's right to defend itself remains unwavering.

Adult film star Stormy Daniels' former lawyer is still on the stand in former President Donald Trump's criminal hush money trial. So far, Keith Davidson has walked the jury through the $130,000 deal he negotiated for his client with Trump's then fixer, Michael Cohen. Davidson is now being questioned by Trump's legal team about his role in publicizing numerous celebrity scandals and sex tapes. CNN's Elie Honig describes recent developments.

Donald Trump's lawyers want the jury to be disgusted by this guy. They want they want the jury to be repelled by Keith Davidson, by Stormy Daniels, by Karen McDougal. And they want to make the point that this happened because Keith Davidson, they're going to argue, is an opportunist. And one of the arguments the prosecutor is going to make is, gee, why would Donald Trump, Michael Cohen, only care about paying them off ten years later?

Most of Kenya has been hit with power shortages as heavy rains continue, according to the country's main power provider, the death toll in days of catastrophic flooding has risen to at least 188 people. Yesterday, staff and visitors were left stranded and buildings submerged at the famous Maasai Mara nature reserve in southwestern Kenya. CNN's Larry Madowo was on the ground in Kenya.

14 different camps have been closed and local authorities a narrow county which includes the national park saying they will have to forcefully evict anybody who still left there.

Investigations into what caused a ship to collide into and collapse the Francis Scott Key Bridge in Baltimore are still ongoing. And officials say the body of a fifth victim of the collapse has just been recovered. Of the six construction workers who lost their lives that day, one remains missing. Authorities say it will take years to rebuild the bridge that over 30,000 people used daily. And we're learning today from the broker that ensures the bridge that Maryland is about to get an insurance payout of $350 million, but that will cover only a small fraction of the billions of dollars worth of damages and cleanup costs.

Something toxic is being discovered in farmland across the United States. That's next.

Nationwide. This is going to be an earthquake.

High levels of toxic chemicals are being found on Maine's farmlands, and farmers there warn land and other states could potentially be contaminated too fast. PFAS, also known as forever chemicals, have shown up in the state's farmlands, where a wastewater byproduct called biosolids were used for fertilizer. They're called forever chemicals because they don't break down or go away once they enter the environment. Those chemicals are widely used to make nonstick products and have been linked to serious health problems like cancer. Maine is working with farmers who are impacted in the state to cover operating expenses or to pivot to new businesses. But Maine may be just the tip of the iceberg, as many other states haven't started testing yet. The USDA, FDA, and EPA told CNN they're coordinating agency efforts to address PFAs concerns in addition to working with the states.

All right, that's all for now. I'm Krista Bo, and our next episode drops at 6 p.m. eastern. Till next time.