写一篇100字左右的介绍五一劳动节的英语作文，词汇简单易懂

May Day, also known as International Workers' Day or Labour Day, is a celebration of labourers and the working classes that is celebrated on May 1st every year. It originated in the United States during the late 19th century and was officially recognized by many countries in the early 20th century. May Day is a time to recognize the achievements of workers around the world. In many countries, it's marked with rallies, parades and marches by trade unions and other organizations to celebrate labour rights. It's also an opportunity for people to come together to advocate for better working conditions, wages and social security benefits for all workers. In addition to celebrating labour rights, May Day is also celebrated as a holiday in some countries with public holidays being declared on May 1st or its nearest weekend. This day has become increasingly popular over time as it has been used to commemorate important historical events such as the Haymarket affair of 1886 which helped spur organized labor movements across Europe and North America. On this day we should take a moment to remember all those who have fought hard for our rights at work over the years - past and present -and thank them for their efforts in making our lives better!