This year, Thai poosam Cavadee was celebrated on 28th Jan 2021. Thaipusam is a festival celebrated by the Tamil Hindu community in the month of Thai (Jan/february). It is on the full moon that this festival is performed in India, Sri Lanka, Malaysia and Mauritius and many other places where ethnic Tamils reside as part of the Indian Diaspora. In Mauritius, Thaipoosam Cavadee is a National Public Holiday on a yearly basis.
The festival marks the occasion when Parvati gave Lord Kartikeya (son of Shiva), a Vel (Spear) so that he could vanquish the evil demon Soorapadman and his brothers. The main objective of the Thaipoosam festival is to pray to God in order to receive his grace so that bad habits/traits are vanquished and eliminated.
Below is a small video that I was able to compile on this occasion: