A man paints red hearts onto the COVID-19 Memorial Wall mourning those who have died, opposite the Houses of Parliament on the Embankment in London, Wednesday, April 7, 2021. Hearts are being painted onto the wall in memory of the many thousands of people who have died in the UK from coronavirus. (AP Photo/Kirsty Wigglesworth)

People pass the red hearts on the COVID-19 Memorial Wall mourning those who have died, opposite the Houses of Parliament on the Embankment in London, Wednesday, April 7, 2021. Hearts are being painted onto the wall in memory of the many thousands of people who have died in the UK from coronavirus. (AP Photo/Kirsty Wigglesworth)

People paint red hearts onto the COVID-19 Memorial Wall mourning those who have died, opposite the Houses of Parliament on the Embankment in London, Wednesday, April 7, 2021. Hearts are being painted onto the wall in memory of the many thousands of people who have died in the UK from coronavirus. (AP Photo/Kirsty Wigglesworth)

Messages are written on the red hearts on the COVID-19 Memorial Wall mourning those who have died, opposite the Houses of Parliament on the Embankment in London, Wednesday, April 7, 2021. Hearts are being painted onto the wall in memory of the many thousands of people who have died in the UK from coronavirus. (AP Photo/Kirsty Wigglesworth)

People paint red hearts onto the COVID-19 Memorial Wall mourning those who have died, opposite the Houses of Parliament on the Embankment in London, Wednesday, April 7, 2021. Hearts are being painted onto the wall in memory of the many thousands of people who have died in the UK from coronavirus. (AP Photo/Kirsty Wigglesworth)

A man paints red hearts onto the COVID-19 Memorial Wall mourning those who have died, opposite the Houses of Parliament on the Embankment in London, Wednesday, April 7, 2021. Hearts are being painted onto the wall in memory of the many thousands of people who have died in the UK from coronavirus. (AP Photo/Kirsty Wigglesworth)

A woman passes the red hearts painted onto the COVID-19 Memorial Wall mourning those who have died, opposite the Houses of Parliament on the Embankment in London, Wednesday, April 7, 2021. Hearts are being painted onto the wall in memory of the many thousands of people who have died in the UK from coronavirus. (AP Photo/Kirsty Wigglesworth)

People paint red hearts onto the COVID-19 Memorial Wall mourning those who have died, opposite the Houses of Parliament on the Embankment in London, Wednesday, April 7, 2021. Hearts are being painted onto the wall in memory of the many thousands of people who have died in the UK from coronavirus. (AP Photo/Kirsty Wigglesworth)

People paint red hearts onto the COVID-19 Memorial Wall mourning those who have died, opposite the Houses of Parliament on the Embankment in London, Wednesday, April 7, 2021. Hearts are being painted onto the wall in memory of the many thousands of people who have died in the UK from coronavirus. (AP Photo/Kirsty Wigglesworth)

A red rose is taped alongside red hearts on the COVID-19 Memorial Wall mourning those who have died, opposite the Houses of Parliament on the Embankment in London, Wednesday, April 7, 2021. Hearts are being painted onto the wall in memory of the many thousands of people who have died in the UK from coronavirus. (AP Photo/Kirsty Wigglesworth)

People paint red hearts onto the COVID-19 Memorial Wall mourning those who have died, opposite the Houses of Parliament on the Embankment in London, Wednesday, April 7, 2021. Hearts are being painted onto the wall in memory of the many thousands of people who have died in the UK from coronavirus. (AP Photo/Kirsty Wigglesworth)

People paint red hearts onto the COVID-19 Memorial Wall mourning those who have died, opposite the Houses of Parliament on the Embankment in London, Wednesday, April 7, 2021. Hearts are being painted onto the wall in memory of the many thousands of people who have died in the UK from coronavirus. (AP Photo/Kirsty Wigglesworth)