The Chabad outreach movement will celebrate Lag B'Omer this year in living rooms as opposed to streets throughout Israel. Normally, hundreds of thousands of children throng the streets to the accompaniment of music that celebrates love between Jews but this year's celebration will be virtual.
Lag B'Omer marks the thirty-third day of the forty-nine day Omer counting period between the exodus from Egypt on Passover and the giving of the Torah on Mount Sinai on Pentecost (Shavuot). These forty-nine days are a time of self-examination and purification since they recall the first such transformation in history, when the nation moved from being slaves to Pharaoh in Egypt to being servants of God at Mount Sinai.
In ancient Israel, it happened that 24,000 students of Rabbi Akiva did not honor one another. As a result of this unfortunate attitude, a plague came to Israel and all of the students died. However, on the thirty-third day of the counting of the Omer, the plague stopped and there is a celebration each year to commemorate that occasion. It's also the day that the great Rabbi Shimon Bar Yochai passed away but before he did he revealed secrets of the Torah that were passed down through the generations and are know collectively as the Kabbalah.
Lag B'Omer is marked by parades where love between Jews is celebrated.