The workers gathered to claim their rights. They wanted salary increases and other benefits, so they decided to unite peacefully and protest in the public square in a nonviolent and legalized manner. These workers are exercising the right to assemble.
The right to assemble is guaranteed by the first amendment of the American constitution. The First Amendment guarantees freedom of speech and religious freedom in the US. In addition, this amendment ensures the freedom of citizens to assemble. For this reason, the amendment ensures that all citizens can form groups that peacefully seek improvements and fulfillment of rights that may be forgotten. The first amendment also guarantees the right of citizens to petition the government.
A lithium atom has 3 protons and 3 electrons. It can lose one of its electrons, making it an ion. It now has more positive protons than electrons so it has an overall positive charge. Therefore it is a positive ion.